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Preview: Recent Articles in Phys. Rev. E

Recent Articles in Phys. Rev. E



Recent articles in Physical Review E



Published: 2016-12-08T12:57:31-05:00

 



Experimental observation of phase-flip transitions in two inductively coupled glow discharge plasmas

2016-12-08T10:00:00-05:00

Author(s): Neeraj Chaubey, S. Mukherjee, A. Sen, and A. N. Sekar Iyengar
We report an experimental observation of a phase-flip transition in the frequency synchronization of two dc glow discharge plasma sources that are coupled in a noninvasive fashion. When the fundamental oscillation frequency of the potential fluctuations of one of the sources is progressively increas…
[Phys. Rev. E 94, 061201(R)] Published Thu Dec 08, 2016



Work fluctuation and total entropy production in nonequilibrium processes

2016-12-08T10:00:00-05:00

Author(s): Ken Funo, Tomohiro Shitara, and Masahito Ueda
Work fluctuation and total entropy production play crucial roles in small thermodynamic systems subject to large thermal fluctuations. We investigate a trade-off relation between them in a nonequilibrium situation in which a system starts from an arbitrary nonequilibrium state. We apply a variationa…
[Phys. Rev. E 94, 062112] Published Thu Dec 08, 2016



Densification and structural transitions in networks that grow by node copying

2016-12-08T10:00:00-05:00

Author(s): U. Bhat, P. L. Krapivsky, R. Lambiotte, and S. Redner

The authors introduce a simple growing network model that allows them to give extensive analytical results for its properties. The model grows by a copying mechanism in which a new node attaches to a randomly selected target node and also, with copying probability p, to each of the neighbors of the target. A key finding is that a transition from a sparse to a dense regime occurs as the copying probability increases beyond 1/2.

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[Phys. Rev. E 94, 062302] Published Thu Dec 08, 2016



Inducing isolated-desynchronization states in complex network of coupled chaotic oscillators

2016-12-08T10:00:00-05:00

Author(s): Weijie Lin, Huiyan Li, Heping Ying, and Xingang Wang
In a recent study about chaos synchronization in complex networks [Nat. Commun. 5, 4079 (2014)], it is shown that a stable synchronous cluster may coexist with vast asynchronous nodes, resembling the phenomenon of a chimera state observed in a regular network of coupled periodic oscillators. Althoug…
[Phys. Rev. E 94, 062303] Published Thu Dec 08, 2016



Rotational tumbling of Escherichia coli aggregates under shear

2016-12-08T10:00:00-05:00

Author(s): R. Portela, P. Patrício, P. L. Almeida, R. G. Sobral, J. M. Franco, and C. R. Leal
Growing living cultures of Escherichia coli bacteria are investigated using real-time in situ rheology and rheoimaging measurements. In the early stages of growth (lag phase) and when subjected to a constant stationary shear, the viscosity slowly increases with the cell's population. As the bacteria…
[Phys. Rev. E 94, 062402] Published Thu Dec 08, 2016



Weak universality in sensory tradeoffs

2016-12-07T10:00:00-05:00

Author(s): Sarah Marzen and Simon DeDeo
For many organisms, the number of sensory neurons is largely determined during development, before strong environmental cues are present. This is despite the fact that environments can fluctuate drastically both from generation to generation and within an organism's lifetime. How can organisms get b…
[Phys. Rev. E 94, 060101(R)] Published Wed Dec 07, 2016



Experimental study of energy exchanges between two coupled granular gases

2016-12-07T10:00:00-05:00

Author(s): J.-Y. Chastaing, J.-C. Géminard, and A. Naert
We report on the energy exchanges between two granular gases of different densities coupled electromechanically by immersed blades attached to dc motors. Zeroing the energy flux between the two subsystems, we demonstrate that an immersed blade is a convenient way to assess the properties of the gran…
[Phys. Rev. E 94, 062110] Published Wed Dec 07, 2016



Extracting work from a single reservoir in the non-Markovian underdamped regime

2016-12-07T10:00:00-05:00

Author(s): Oscar Paredes-Altuve, Ernesto Medina, and Pedro J. Colmenares
We derive optimal-work finite time protocols for a colloidal particle in a harmonic well in the general non-Markovian underdamped regime in contact with a single reservoir. Optimal-work protocols with and without measurements of position and velocity are shown to be linear in time. In order to treat…
[Phys. Rev. E 94, 062111] Published Wed Dec 07, 2016



Harvesting wind energy to detect weak signals using mechanical stochastic resonance

2016-12-07T10:00:00-05:00

Author(s): Barbara J. Breen, Jillian G. Rix, Samuel J. Ross, Yue Yu (俞越), John F. Lindner, Nathan Mathewson, Elliot R. Wainwright, and Ian Wilson
Wind is free and ubiquitous and can be harnessed in multiple ways. We demonstrate mechanical stochastic resonance in a tabletop experiment in which wind energy is harvested to amplify weak periodic signals detected via the movement of an inverted pendulum. Unlike earlier mechanical stochastic resona…
[Phys. Rev. E 94, 062205] Published Wed Dec 07, 2016



Speed and efficiency limits of multilevel incoherent heat engines

2016-12-06T10:00:00-05:00

Author(s): V. Mukherjee, W. Niedenzu, A. G. Kofman, and G. Kurizki
We present a comprehensive theory of heat engines (HE) based on a quantum-mechanical “working fluid” (WF) with periodically modulated energy levels. The theory is valid for any periodicity of driving Hamiltonians that commute with themselves at all times and do not induce coherence in the WF. Contin…
[Phys. Rev. E 94, 062109] Published Tue Dec 06, 2016



Dynamics of phase oscillators with generalized frequency-weighted coupling

2016-12-06T10:00:00-05:00

Author(s): Can Xu, Jian Gao, Hairong Xiang, Wenjing Jia, Shuguang Guan, and Zhigang Zheng
Heterogeneous coupling patterns among interacting elements are ubiquitous in real systems ranging from physics, chemistry to biology communities, which have attracted much attention during recent years. In this paper, we extend the Kuramoto model by considering a particular heterogeneous coupling sc…
[Phys. Rev. E 94, 062204] Published Tue Dec 06, 2016



Competition of simple and complex adoption on interdependent networks

2016-12-06T10:00:00-05:00

Author(s): Agnieszka Czaplicka, Raul Toral, and Maxi San Miguel
We consider the competition of two mechanisms for adoption processes: a so-called complex threshold dynamics and a simple susceptible-infected-susceptible (SIS) model. Separately, these mechanisms lead, respectively, to first-order and continuous transitions between nonadoption and adoption phases. …
[Phys. Rev. E 94, 062301] Published Tue Dec 06, 2016



How to connect time-lapse recorded trajectories of motile microorganisms with dynamical models in continuous time

2016-12-06T10:00:00-05:00

Author(s): Jonas N. Pedersen, Liang Li, Cristian Grădinaru, Robert H. Austin, Edward C. Cox, and Henrik Flyvbjerg
We provide a tool for data-driven modeling of motility, data being time-lapse recorded trajectories. Several mathematical properties of a model to be found can be gleaned from appropriate model-independent experimental statistics, if one understands how such statistics are distorted by the finite sa…
[Phys. Rev. E 94, 062401] Published Tue Dec 06, 2016



Theory of terahertz emission from femtosecond-laser-induced microplasmas

2016-12-06T10:00:00-05:00

Author(s): I. Thiele, R. Nuter, B. Bousquet, V. Tikhonchuk, S. Skupin, X. Davoine, L. Gremillet, and L. Bergé
We present a theoretical investigation of terahertz (THz) generation in laser-induced gas plasmas. The work is strongly motivated by recent experimental results on microplasmas, but our general findings are not limited to such a configuration. The electrons and ions are created by tunnel ionization …
[Phys. Rev. E 94, 063202] Published Tue Dec 06, 2016



Erratum: Numerical computations of the dynamics of fluidic membranes and vesicles [Phys. Rev. E 92, 052704 (2015)]

2016-12-06T10:00:00-05:00

Author(s): John W. Barrett, Harald Garcke, and Robert Nürnberg
[Phys. Rev. E 94, 069902] Published Tue Dec 06, 2016



Publisher's Note: Laser propagation in dense magnetized plasma [Phys. Rev. E 94, 053207 (2016)]

2016-12-06T10:00:00-05:00

Author(s): S. X. Luan, W. Yu, F. Y. Li, Dong Wu, Z. M. Sheng, M. Y. Yu, and J. Zhang
[Phys. Rev. E 94, 069903] Published Tue Dec 06, 2016



Stability of quantum statistical ensembles with respect to local measurements

2016-12-05T10:00:00-05:00

Author(s): Walter Hahn and Boris V. Fine
We introduce a stability criterion for quantum statistical ensembles describing macroscopic systems. An ensemble is called “stable” when a small number of local measurements cannot significantly modify the probability distribution of the total energy of the system. We apply this criterion to lattice…
[Phys. Rev. E 94, 062106] Published Mon Dec 05, 2016



Minimum relative entropy distributions with a large mean are Gaussian

2016-12-05T10:00:00-05:00

Author(s): Matteo Smerlak
Entropy optimization principles are versatile tools with wide-ranging applications from statistical physics to engineering to ecology. Here we consider the following constrained problem: Given a prior probability distribution q, find the posterior distribution p minimizing the relative entropy (also…
[Phys. Rev. E 94, 062107] Published Mon Dec 05, 2016



Why patchy diffusion-limited aggregation belongs to the directed-percolation universality class

2016-12-05T10:00:00-05:00

Author(s): Moses J. Kartha and Arun G. Banpurkar
We present a possible link between nonequilibrium phase transition observed in patchy diffusion-limited aggregation (DLA) [M. J. Kartha and A. Sayeed, Phys. Lett. A 380, 2791 (2016)] and directed bond percolation (DP). A system of directed percolation with patchy particles (patchy DP) in which the b…
[Phys. Rev. E 94, 062108] Published Mon Dec 05, 2016



Origin of two maxima in specific heat in enthalpy relaxation under thermal history composed of cooling, annealing, and heating

2016-12-05T10:00:00-05:00

Author(s): Waki Sakatsuji, Takashi Konishi, and Yoshihisa Miyamoto
The origin of two maxima in specific heat observed at the higher and the lower temperatures in the glass-transition region in the heating process has been studied for polymethyl methacrylate and polyvinyl chloride using differential scanning calorimetry, and the calculation was done using the phenom…
[Phys. Rev. E 94, 062501] Published Mon Dec 05, 2016



Elastic interactions between topological defects in chiral nematic shells

2016-12-05T10:00:00-05:00

Author(s): Alexandre Darmon, Olivier Dauchot, Teresa Lopez-Leon, and Michael Benzaquen
We present a self-consistent and robust theoretical model to investigate elastic interactions between topological defects in liquid crystal shells. Accounting for the nonconcentric nature of the shell in a simple manner, we are able to successfully and accurately explain and predict the positions of…
[Phys. Rev. E 94, 062701] Published Mon Dec 05, 2016



Lagrangian statistics of mesoscale turbulence in a natural environment: The Agulhas return current

2016-12-05T10:00:00-05:00

Author(s): Francesco Carbone, Christian N. Gencarelli, and Ian M. Hedgecock
The properties of mesoscale geophysical turbulence in an oceanic environment have been investigated through the Lagrangian statistics of sea surface temperature measured by a drifting buoy within the Agulhas return current, where strong temperature mixing produces locally sharp temperature gradients…
[Phys. Rev. E 94, 063101] Published Mon Dec 05, 2016



Estimation of Reynolds number for flows around cylinders with lattice Boltzmann methods and artificial neural networks

2016-12-05T10:00:00-05:00

Author(s): Mauricio Carrillo, Ulices Que, and José A. González
The present work investigates the application of artificial neural networks (ANNs) to estimate the Reynolds (Re) number for flows around a cylinder. The data required to train the ANN was generated with our own implementation of a lattice Boltzmann method (LBM) code performing simulations of a two-d…
[Phys. Rev. E 94, 063304] Published Mon Dec 05, 2016



Publisher's Note: Cascading failures in interdependent networks with finite functional components [Phys. Rev. E 94, 042304 (2016)]

2016-12-05T10:00:00-05:00

Author(s): M. A. Di Muro, S. V. Buldyrev, H. E. Stanley, and L. A. Braunstein

[Phys. Rev. E 94, 069901] Published Mon Dec 05, 2016



Thermalization of oscillator chains with onsite anharmonicity and comparison with kinetic theory

2016-12-02T10:00:00-05:00

Author(s): Christian B. Mendl, Jianfeng Lu, and Jani Lukkarinen
We perform microscopic molecular dynamics simulations of particle chains with an onsite anharmonicity to study relaxation of spatially homogeneous states to equilibrium, and directly compare the simulations with the corresponding Boltzmann-Peierls kinetic theory. The Wigner function serves as a comm…
[Phys. Rev. E 94, 062104] Published Fri Dec 02, 2016



Curl forces and the nonlinear Fokker-Planck equation

2016-12-02T10:00:00-05:00

Author(s): R. S. Wedemann, A. R. Plastino, and C. Tsallis
Nonlinear Fokker-Planck equations endowed with curl drift forces are investigated. The conditions under which these evolution equations admit stationary solutions, which are q exponentials of an appropriate potential function, are determined. It is proved that when these stationary solutions exist, …
[Phys. Rev. E 94, 062105] Published Fri Dec 02, 2016



Comparing the locking threshold for rings and chains of oscillators

2016-12-02T10:00:00-05:00

Author(s): Bertrand Ottino-Löffler and Steven H. Strogatz
We present a case study of how topology can affect synchronization. Specifically, we consider arrays of phase oscillators coupled in a ring or a chain topology. Each ring is perfectly matched to a chain with the same initial conditions and the same random natural frequencies. The only difference is …
[Phys. Rev. E 94, 062203] Published Fri Dec 02, 2016



Depletion forces on circular and elliptical obstacles induced by active matter

2016-12-02T10:00:00-05:00

Author(s): L. R. Leite, D. Lucena, F. Q. Potiguar, and W. P. Ferreira
Depletion forces exerted by self-propelled particles on circular and elliptical passive objects are studied using numerical simulations. We show that a bath of active particles can induce repulsive and attractive forces which are sensitive to the shape and orientation of the passive objects (either …
[Phys. Rev. E 94, 062602] Published Fri Dec 02, 2016



Mass-flow-rate-controlled fluid flow in nanochannels by particle insertion and deletion

2016-12-02T10:00:00-05:00

Author(s): Paul L. Barclay and Jennifer R. Lukes
A nonequilibrium molecular dynamics method to induce fluid flow in nanochannels, the insertion-deletion method (IDM), is introduced. IDM inserts and deletes particles within distinct regions in the domain, creating locally high and low pressures. The benefits of IDM are that it directly controls a p…
[Phys. Rev. E 94, 063303] Published Fri Dec 02, 2016



Statistical theory of reversals in two-dimensional confined turbulent flows

2016-12-01T10:00:00-05:00

Author(s): Vishwanath Shukla, Stephan Fauve, and Marc Brachet
It is shown that the truncated Euler equation (TEE), i.e., a finite set of ordinary differential equations for the amplitude of the large-scale modes, can correctly describe the complex transitional dynamics that occur within the turbulent regime of a confined two-dimensional flow obeying Navier-Sto…
[Phys. Rev. E 94, 061101(R)] Published Thu Dec 01, 2016



Time-dependent cavitation in a viscous fluid

2016-12-01T10:00:00-05:00

Author(s): Vitaly A. Shneidman
Kinetics of nucleation and growth of empty bubbles in a nonvolatile incompressible fluid under negative pressure is considered within the generalized Zeldovich framework. The transient matched asymptotic solution obtained earlier for predominantly viscous nucleation is used to evaluate the distribut…
[Phys. Rev. E 94, 062101] Published Thu Dec 01, 2016



Portfolio optimization problem with nonidentical variances of asset returns using statistical mechanical informatics

2016-12-01T10:00:00-05:00

Author(s): Takashi Shinzato
The portfolio optimization problem in which the variances of the return rates of assets are not identical is analyzed in this paper using the methodology of statistical mechanical informatics, specifically, replica analysis. We defined two characteristic quantities of an optimal portfolio, namely, m…
[Phys. Rev. E 94, 062102] Published Thu Dec 01, 2016



Response to a periodic stimulus in a perfect integrate-and-fire neuron model driven by colored noise

2016-12-01T10:00:00-05:00

Author(s): Romi Mankin and Astrid Rekker
The output interspike interval statistics of a stochastic perfect integrate-and-fire neuron model driven by an additive exogenous periodic stimulus is considered. The effect of temporally correlated random activity of synaptic inputs is modeled by an additive symmetric dichotomous noise. Using a fir…
[Phys. Rev. E 94, 062103] Published Thu Dec 01, 2016



Multifractals embedded in short time series: An unbiased estimation of probability moment

2016-12-01T10:00:00-05:00

Author(s): Lu Qiu, Tianguang Yang, Yanhua Yin, Changgui Gu, and Huijie Yang
An exact estimation of probability moments is the base for several essential concepts, such as the multifractals, the Tsallis entropy, and the transfer entropy. By means of approximation theory we propose a new method called factorial-moment-based estimation of probability moments. Theoretical predi…
[Phys. Rev. E 94, 062201] Published Thu Dec 01, 2016



Interplay of degree correlations and cluster synchronization

2016-12-01T10:00:00-05:00

Author(s): Sarika Jalan, Anil Kumar, Alexey Zaikin, and Jürgen Kurths
We study the evolution of coupled chaotic dynamics on networks and investigate the role of degree-degree correlation in the networks' cluster synchronizability. We find that an increase in the disassortativity can lead to an increase or a decrease in the cluster synchronizability depending on the de…
[Phys. Rev. E 94, 062202] Published Thu Dec 01, 2016



Probing heterogeneous dynamics from spatial density correlation in glass-forming liquids

2016-12-01T10:00:00-05:00

Author(s): Yan-Wei Li, You-Liang Zhu, and Zhao-Yan Sun
We numerically investigate the connection between spatial density correlation and dynamical heterogeneity in glass-forming liquids. We demonstrate that the cluster size defined by the spatial aggregation of densely packed particles (DPPs) can better capture the difference between the dynamics of the…
[Phys. Rev. E 94, 062601] Published Thu Dec 01, 2016



Packing of nonoverlapping cubic particles: Computational algorithms and microstructural characteristics

2016-12-01T10:00:00-05:00

Author(s): Hessam Malmir, Muhammad Sahimi, and M. Reza Rahimi Tabar
Packing of cubic particles arises in a variety of problems, ranging from biological materials to colloids and the fabrication of new types of porous materials with controlled morphology. The properties of such packings may also be relevant to problems involving suspensions of cubic zeolites, precipi…
[Phys. Rev. E 94, 062901] Published Thu Dec 01, 2016



Nonvibrating granular model for a glass-forming liquid: Equilibration and aging

2016-12-01T10:00:00-05:00

Author(s): C. Tapia-Ignacio, J. Garcia-Serrano, and F. Donado
We studied experimentally a model of a glass-forming liquid on the basis of a nonvibrating magnetic granular system under an unsteady magnetic field. A sudden quenching was produced that drove the system from a liquid state to a different final state with lower temperature; the latter could be a liq…
[Phys. Rev. E 94, 062902] Published Thu Dec 01, 2016



Finger evolution of a gas bubble driven by atmospheric pressure plasma

2016-12-01T10:00:00-05:00

Author(s): Jia-Hau Shiu and Hong-Yu Chu
We report the generation and evolution of a finger-shaped bubble in liquid by dielectric discharge setup. The spherical gas bubble is deformed into a finger-shaped bubble after the ignition of plasma. The presence of the filamentary discharge in the bubble not only provides the local heating to the …
[Phys. Rev. E 94, 063201] Published Thu Dec 01, 2016



Direct numerical simulation of gas-solid-liquid flows with capillary effects: An application to liquid bridge forces between spherical particles

2016-12-01T10:00:00-05:00

Author(s): Xiaosong Sun and Mikio Sakai
In this study, a numerical method is developed to perform the direct numerical simulation (DNS) of gas-solid-liquid flows involving capillary effects. The volume-of-fluid method employed to track the free surface and the immersed boundary method is adopted for the fluid-particle coupling in three-ph…
[Phys. Rev. E 94, 063301] Published Thu Dec 01, 2016



Lattice Boltzmann simulations of droplet formation in confined channels with thermocapillary flows

2016-12-01T10:00:00-05:00

Author(s): A. Gupta, M. Sbragaglia, D. Belardinelli, and K. Sugiyama
Based on mesoscale lattice Boltzmann simulations with the “Shan-Chen” model, we explore the influence of thermocapillarity on the breakup properties of fluid threads in a microfluidic T-junction, where a dispersed phase is injected perpendicularly into a main channel containing a continuous phase, a…
[Phys. Rev. E 94, 063302] Published Thu Dec 01, 2016



Effect of long-range interactions on the phase transition of Axelrod's model

2016-11-30T10:00:00-05:00

Author(s): Sandro M. Reia and José F. Fontanari
Axelrod's model with F=2 cultural features, where each feature can assume k states drawn from a Poisson distribution of parameter q, exhibits a continuous nonequilibrium phase transition in the square lattice. Here we use extensive Monte Carlo simulations and finite-size scaling to study the critica…
[Phys. Rev. E 94, 052149] Published Wed Nov 30, 2016



Mesoscopic kinetic basis of macroscopic chemical thermodynamics: A mathematical theory

2016-11-30T10:00:00-05:00

Author(s): Hao Ge and Hong Qian
Gibbs' macroscopic chemical thermodynamics is one of the most important theories in chemistry. Generalizing it to mesoscaled nonequilibrium systems is essential to biophysics. The nonequilibrium stochastic thermodynamics of chemical reaction kinetics suggested a free energy balance equation dF^{(mes…
[Phys. Rev. E 94, 052150] Published Wed Nov 30, 2016



Anomalous dynamics and the choice of Poincaré recurrence set

2016-11-30T10:00:00-05:00

Author(s): Matteo Sala, Roberto Artuso, and Cesar Manchein
We investigate the dependence of Poincaré recurrence-time statistics on the choice of recurrence set by sampling the dynamics of two- and four-dimensional Hamiltonian maps. We derive a method that allows us to visualize the direct relation between the shape of a recurrence set and the values of its …
[Phys. Rev. E 94, 052222] Published Wed Nov 30, 2016



Memory states in small arrays of Josephson junctions

2016-11-30T10:00:00-05:00

Author(s): Y. Braiman, B. Neschke, N. Nair, N. Imam, and R. Glowinski
We study memory states of a circuit consisting of a small inductively coupled Josephson junction array and introduce basic (write, read, and reset) memory operations logics of the circuit. The presented memory operation paradigm is fundamentally different from conventional single quantum flux operat…
[Phys. Rev. E 94, 052223] Published Wed Nov 30, 2016



Cascaded lattice Boltzmann method with improved forcing scheme for large-density-ratio multiphase flow at high Reynolds and Weber numbers

2016-11-30T10:00:00-05:00

Author(s): Daniel Lycett-Brown and Kai H. Luo
A recently developed forcing scheme has allowed the pseudopotential multiphase lattice Boltzmann method to correctly reproduce coexistence curves, while expanding its range to lower surface tensions and arbitrarily high density ratios [Lycett-Brown and Luo, Phys. Rev. E 91, 023305 (2015)]. Here, a t…
[Phys. Rev. E 94, 053313] Published Wed Nov 30, 2016



Publisher's Note: Critical wind speed at which trees break [Phys. Rev. E 93, 023001 (2016)]

2016-11-30T10:00:00-05:00

Author(s): E. Virot, A. Ponomarenko, É. Dehandschoewercker, D. Quéré, and C. Clanet

[Phys. Rev. E 94, 059907] Published Wed Nov 30, 2016



Emergent interparticle interactions in thermal amorphous solids

2016-11-29T10:00:00-05:00

Author(s): Oleg Gendelman, Edan Lerner, Yoav G. Pollack, Itamar Procaccia, Corrado Rainone, and Birte Riechers
Amorphous media at finite temperatures, be them liquids, colloids, or glasses, are made of interacting particles that move chaotically due to thermal energy, continuously colliding and scattering off each other. When the average configuration in these systems relaxes only at long times, one can intr…
[Phys. Rev. E 94, 051001(R)] Published Tue Nov 29, 2016



Theoretical description of effective heat transfer between two viscously coupled beads

2016-11-29T10:00:00-05:00

Author(s): A. Bérut, A. Imparato, A. Petrosyan, and S. Ciliberto
We analytically study the role of nonconservative forces, namely viscous couplings, on the statistical properties of the energy flux between two Brownian particles kept at different temperatures. From the dynamical model describing the system, we identify an energy flow that satisfies a fluctuation …
[Phys. Rev. E 94, 052148] Published Tue Nov 29, 2016



Energetics of synchronization in coupled oscillators rotating on circular trajectories

2016-11-29T10:00:00-05:00

Author(s): Yuki Izumida, Hiroshi Kori, and Udo Seifert
We derive a concise and general expression of the energy dissipation rate for coupled oscillators rotating on circular trajectories by unifying the nonequilibrium aspects with the nonlinear dynamics via stochastic thermodynamics. In the framework of phase oscillator models, it is known that the even…
[Phys. Rev. E 94, 052221] Published Tue Nov 29, 2016



Statistical properties of fluctuations of time series representing appearances of words in nationwide blog data and their applications: An example of modeling fluctuation scalings of nonstationary time series

2016-11-29T10:00:00-05:00

Author(s): Hayafumi Watanabe, Yukie Sano, Hideki Takayasu, and Misako Takayasu
To elucidate the nontrivial empirical statistical properties of fluctuations of a typical nonsteady time series representing the appearance of words in blogs, we investigated approximately 3×10^{9} Japanese blog articles over a period of six years and analyze some corresponding mathematical models. …
[Phys. Rev. E 94, 052317] Published Tue Nov 29, 2016



Characterization of multiple topological scales in multiplex networks through supra-Laplacian eigengaps

2016-11-29T10:00:00-05:00

Author(s): Emanuele Cozzo and Yamir Moreno
Multilayer networks have been the subject of intense research during the past few years, as they represent better the interdependent nature of many real-world systems. Here, we address the question of describing the three different structural phases in which a multiplex network might exist. We show …
[Phys. Rev. E 94, 052318] Published Tue Nov 29, 2016



What Big Data tells: Sampling the social network by communication channels

2016-11-29T10:00:00-05:00

Author(s): János Török, Yohsuke Murase, Hang-Hyun Jo, János Kertész, and Kimmo Kaski
Big Data has become the primary source of understanding the structure and dynamics of the society at large scale. The network of social interactions can be considered as a multiplex, where each layer corresponds to one communication channel and the aggregate of all of them constitutes the entire soc…
[Phys. Rev. E 94, 052319] Published Tue Nov 29, 2016



Suppressing membrane height fluctuations leads to a membrane-mediated interaction among proteins

2016-11-29T10:00:00-05:00

Author(s): Kayla Sapp and Lutz Maibaum
Membrane-induced interactions can play a significant role in the spatial distribution of membrane-bound proteins. We develop a model that combines a continuum description of lipid bilayers with a discrete particle model of proteins to probe the emerging structure of the combined membrane-protein sys…
[Phys. Rev. E 94, 052414] Published Tue Nov 29, 2016



Dynamics of disk pairs in a nematic liquid crystal

2016-11-29T10:00:00-05:00

Author(s): Alena Antipova and Colin Denniston
We use a hybrid lattice Boltzmann method to study the behavior of sets of ferromagnetic colloidal disks in a nematic liquid crystal. When a weak rotating magnetic field acts on the system, the disks rotate following the magnetic field. This leads to a distortion in the liquid crystal that drives tra…
[Phys. Rev. E 94, 052704] Published Tue Nov 29, 2016



One-dimensional model and solutions for creeping gas flows in the approximation of uniform pressure

2016-11-29T10:00:00-05:00

Author(s): A. Vedernikov and D. Balapanov
A model, along with analytical and numerical solutions, is presented to describe a wide variety of one-dimensional slow flows of compressible heat-conductive fluids. The model is based on the approximation of uniform pressure valid for the flows, in which the sound propagation time is much shorter t…
[Phys. Rev. E 94, 053121] Published Tue Nov 29, 2016



Monosized dripping mode of axisymmetric flow focusing

2016-11-29T10:00:00-05:00

Author(s): Francisco Cruz-Mazo, J. M. Montanero, and A. M. Gañán-Calvo
We identify and analyze the perfectly regular dripping mode of flow focusing. This mode occurs within narrow intervals of injected flow rates and applied pressure drops and leads to homogeneous-size droplets with diameters similar to or smaller than that of the discharge orifice. The balance between…
[Phys. Rev. E 94, 053122] Published Tue Nov 29, 2016



Pair potentials for warm dense matter and their application to x-ray Thomson scattering in aluminum and beryllium

2016-11-29T10:00:00-05:00

Author(s): L. Harbour, M. W. C. Dharma-wardana, D. D. Klug, and L. J. Lewis
Ultrafast laser experiments yield increasingly reliable data on warm dense matter, but their interpretation requires theoretical models. We employ an efficient density functional neutral-pseudoatom hypernetted-chain (NPA-HNC) model with accuracy comparable to ab initio simulations and which provides…
[Phys. Rev. E 94, 053211] Published Tue Nov 29, 2016



Anomalous structural transition of confined hard squares

2016-11-28T10:00:00-05:00

Author(s): Péter Gurin, Szabolcs Varga, and Gerardo Odriozola
Structural transitions are examined in quasi-one-dimensional systems of freely rotating hard squares, which are confined between two parallel walls. We find two competing phases: one is a fluid where the squares have two sides parallel to the walls, while the second one is a solidlike structure with…
[Phys. Rev. E 94, 050603(R)] Published Mon Nov 28, 2016



Universality and dependence on initial conditions in the class of the nonlinear molecular beam epitaxy equation

2016-11-28T10:00:00-05:00

Author(s): I. S. S. Carrasco and T. J. Oliveira
We report extensive numerical simulations of growth models belonging to the nonlinear molecular beam epitaxy (nMBE) class, on flat (fixed-size) and expanding substrates (ES). In both d=1+1 and 2+1, we find that growth regime height distributions (HDs), and spatial and temporal covariances are univer…
[Phys. Rev. E 94, 050801(R)] Published Mon Nov 28, 2016



Inhomogeneous diffusion and ergodicity breaking induced by global memory effects

2016-11-28T10:00:00-05:00

Author(s): Adrián A. Budini
We introduce a class of discrete random-walk model driven by global memory effects. At any time, the right-left transitions depend on the whole previous history of the walker, being defined by an urnlike memory mechanism. The characteristic function is calculated in an exact way, which allows us to …
[Phys. Rev. E 94, 052142] Published Mon Nov 28, 2016



Metastable minima of the Heisenberg spin glass in a random magnetic field

2016-11-28T10:00:00-05:00

Author(s): Auditya Sharma, Joonhyun Yeo, and M. A. Moore
We have studied zero-temperature metastable minima in classical m-vector component spin glasses in the presence of m-component random fields for two models, the Sherrington-Kirkpatrick (SK) model and the Viana-Bray (VB) model. For the SK model we have calculated analytically its complexity (the log …
[Phys. Rev. E 94, 052143] Published Mon Nov 28, 2016



Noisy oscillator: Random mass and random damping

2016-11-28T10:00:00-05:00

Author(s): Stanislav Burov and Moshe Gitterman
The problem of a linear damped noisy oscillator is treated in the presence of two multiplicative sources of noise which imply a random mass and random damping. The additive noise and the noise in the damping are responsible for an influx of energy to the oscillator and its dissipation to the surroun…
[Phys. Rev. E 94, 052144] Published Mon Nov 28, 2016



Maximum caliber inference and the stochastic Ising model

2016-11-28T10:00:00-05:00

Author(s): Carlo Cafaro and Sean Alan Ali
We investigate the maximum caliber variational principle as an inference algorithm used to predict dynamical properties of complex nonequilibrium, stationary, statistical systems in the presence of incomplete information. Specifically, we maximize the path entropy over discrete time step trajectorie…
[Phys. Rev. E 94, 052145] Published Mon Nov 28, 2016



Two-dimensional photon echoes reveal non-Markovian energy transfer in an excitonic dimer

2016-11-28T10:00:00-05:00

Author(s): Hong-Guang Duan, Moritz Frey, Michael Thorwart, and Peter Nalbach
We show that strong non-Markovian effects can be revealed by the steady-state two-dimensional (2D) photon echo spectra at asymptotic waiting times. For this, we use a simple dimer toy model that is strongly coupled to a harmonic bath with parameters typical for photoactive biomolecules. We calculate…
[Phys. Rev. E 94, 052146] Published Mon Nov 28, 2016



Fractional kinetics emerging from ergodicity breaking in random media

2016-11-28T10:00:00-05:00

Author(s): Daniel Molina-García, Tuan Minh Pham, Paolo Paradisi, Carlo Manzo, and Gianni Pagnini
We present a modeling approach for diffusion in a complex medium characterized by a random length scale. The resulting stochastic process shows subdiffusion with a behavior in qualitative agreement with single-particle tracking experiments in living cells, such as ergodicity breaking, p variation, a…
[Phys. Rev. E 94, 052147] Published Mon Nov 28, 2016



Synchronization of coupled noisy oscillators: Coarse graining from continuous to discrete phases

2016-11-28T10:00:00-05:00

Author(s): Daniel Escaff, Alexandre Rosas, Raúl Toral, and Katja Lindenberg
The theoretical description of synchronization phenomena often relies on coupled units of continuous time noisy Markov chains with a small number of states in each unit. It is frequently assumed, either explicitly or implicitly, that coupled discrete-state noisy Markov units can be used to model mat…
[Phys. Rev. E 94, 052219] Published Mon Nov 28, 2016



Optical wall dynamics induced by coexistence of monostable and bistable spatial regions

2016-11-28T10:00:00-05:00

Author(s): V. Odent, E. Louvergneaux, M. G. Clerc, and I. Andrade-Silva
When nonequilibrium extended homogeneous systems exhibit multistability, it leads to the presence of domain walls between the existing equilibria. Depending on the stability of the steady states, the dynamics differs. Here, we consider the interface dynamics in the case of a spatially inhomogeneous …
[Phys. Rev. E 94, 052220] Published Mon Nov 28, 2016



Epidemic spreading in random rectangular networks

2016-11-28T10:00:00-05:00

Author(s): Ernesto Estrada, Sandro Meloni, Matthew Sheerin, and Yamir Moreno
The use of network theory to model disease propagation on populations introduces important elements of reality to the classical epidemiological models. The use of random geometric graphs (RGGs) is one of such network models that allows for the consideration of spatial properties on disease propagati…
[Phys. Rev. E 94, 052316] Published Mon Nov 28, 2016



Systems-level approach to uncovering diffusive states and their transitions from single-particle trajectories

2016-11-28T10:00:00-05:00

Author(s): Peter K. Koo and Simon G. J. Mochrie
The stochastic motions of a diffusing particle contain information concerning the particle's interactions with binding partners and with its local environment. However, an accurate determination of the underlying diffusive properties, beyond normal diffusion, has remained challenging when analyzing …
[Phys. Rev. E 94, 052412] Published Mon Nov 28, 2016



Impact of time delays on oscillatory dynamics of interlinked positive and negative feedback loops

2016-11-28T10:00:00-05:00

Author(s): Bo Huang, Xinyu Tian, Feng Liu, and Wei Wang
Interlinking a positive feedback loop (PFL) with a negative feedback loop (NFL) constitutes a typical motif in genetic networks, performing various functions in cell signaling. How time delay in feedback regulation affects the dynamics of such systems still remains unclear. Here, we investigate thre…
[Phys. Rev. E 94, 052413] Published Mon Nov 28, 2016



Cooperativity at the glass transition: A perspective from facilitation on the analysis of relaxation in modulated calorimetry

2016-11-28T10:00:00-05:00

Author(s): Elpidio Tombari and Marco Pieruccini
The glass transition region in nonconfined polymeric and low-molecular-weight supercooled liquids is probed by temperature-modulated calorimetry at a frequency of 3.3 mHz. From the distribution of relaxation times derived by analyzing the complex heat capacity, the number N_{α} of cooperatively rear…
[Phys. Rev. E 94, 052504] Published Mon Nov 28, 2016



Athermal rheology of weakly attractive soft particles

2016-11-28T10:00:00-05:00

Author(s): Ehsan Irani, Pinaki Chaudhuri, and Claus Heussinger
We study the rheology of a soft particulate system where the interparticle interactions are weakly attractive. Using extensive molecular dynamics simulations, we scan across a wide range of packing fractions (ϕ), attraction strengths (u), and imposed shear rates (γ[over ̇]). In striking contrast to …
[Phys. Rev. E 94, 052608] Published Mon Nov 28, 2016



Wave propagation in one-dimensional microscopic granular chains

2016-11-28T10:00:00-05:00

Author(s): Wei-Hsun Lin and Chiara Daraio
We employ noncontact optical techniques to generate and measure stress waves in uncompressed, one-dimensional microscopic granular chains, and support our experiments with discrete numerical simulations. We show that the wave propagation through dry particles (150 μm radius) is highly nonlinear and …
[Phys. Rev. E 94, 052907] Published Mon Nov 28, 2016



Radiative transfer of acoustic waves in continuous complex media: Beyond the Helmholtz equation

2016-11-28T10:00:00-05:00

Author(s): Ibrahim Baydoun, Diego Baresch, Romain Pierrat, and Arnaud Derode
Heterogeneity can be accounted for by a random potential in the wave equation. For acoustic waves in a fluid with fluctuations of both density and compressibility (as well as for electromagnetic waves in a medium with fluctuation of both permittivity and permeability) the random potential entails a …
[Phys. Rev. E 94, 053005] Published Mon Nov 28, 2016



Log law of the wall revisited in Taylor-Couette flows at intermediate Reynolds numbers

2016-11-28T10:00:00-05:00

Author(s): Harminder Singh, Claudio Alberto Torres Suazo, and Alain Liné
We provide Reynolds averaged azimuthal velocity profiles, measured in a Taylor-Couette system in turbulent flow, at medium Reynolds (7800 < Re < 18000) number with particle image velocimetry technique. We find that in the wall regions, close to the inner and outer cylinders, the azimuthal velocity profile reveals a significant deviation from classical logarithmic law. In order to propose a new law of the wall, the profile of turbulent mixing length was estimated from data processing; it was shown to behave nonlinearly with the radial wall distance. Based on this turbulent mixing length expression, a law of the wall was proposed for the Reynolds averaged azimuthal velocity, derived from momentum balance and validated by comparison to different data. In addition, the profile of viscous dissipation rate was investigated and compared to the global power needed to maintain the inner cylinder in rotation.
[Phys. Rev. E 94, 053120] Published Mon Nov 28, 2016



Summation of the spectra of all partially resolved transition arrays in a supertransition array

2016-11-28T10:00:00-05:00

Author(s): Y. Kurzweil and G. Hazak
It is shown that the contributions of all partially resolved transition arrays (PRTAs) to the spectrum of a supertransition array (STA) may be summed by an efficient analytical method. The method is similar to the configurationally resolved super transition array method [G. Hazak and Y. Kurzweil, Hi…
[Phys. Rev. E 94, 053210] Published Mon Nov 28, 2016



Grid refinement for entropic lattice Boltzmann models

2016-11-28T10:00:00-05:00

Author(s): B. Dorschner, N. Frapolli, S. S. Chikatamarla, and I. V. Karlin
We propose a multidomain grid refinement technique with extensions to entropic incompressible, thermal, and compressible lattice Boltzmann models. Its validity and accuracy are assessed by comparison to available direct numerical simulation and experiment for the simulation of isothermal, thermal, a…
[Phys. Rev. E 94, 053311] Published Mon Nov 28, 2016



Hybrid Monte Carlo and continuum modeling of electrolytes with concentration-induced dielectric variations

2016-11-28T10:00:00-05:00

Author(s): Xiaofei Guan, Manman Ma, Zecheng Gan, Zhenli Xu, and Bo Li
The distribution of ions near a charged surface is an important quantity in many biological and material processes, and has been therefore investigated intensively. However, few theoretical and simulation approaches have included the influence of concentration-induced variations in the local dielect…
[Phys. Rev. E 94, 053312] Published Mon Nov 28, 2016



Linking dissipation-induced instabilities with nonmodal growth: The case of helical magnetorotational instability

2016-11-23T10:00:00-05:00

Author(s): G. Mamatsashvili and F. Stefani
The helical magnetorotational instability is known to work for resistive rotational flows with comparably steep negative or extremely steep positive shear. The corresponding lower and upper Liu limits of the shear are continuously connected when some axial electrical current is allowed to flow throu…
[Phys. Rev. E 94, 051203(R)] Published Wed Nov 23, 2016



Heat conduction in a chain of colliding particles with a stiff repulsive potential

2016-11-23T10:00:00-05:00

Author(s): Oleg V. Gendelman and Alexander V. Savin
One-dimensional billiards, i.e., a chain of colliding particles with equal masses, is a well-known example of a completely integrable system. Billiards with different particle masses is generically not integrable, but it still exhibits divergence of a heat conduction coefficient (HCC) in the thermod…
[Phys. Rev. E 94, 052137] Published Wed Nov 23, 2016



Temporal disorder does not forbid discontinuous absorbing phase transitions in low-dimensional systems

2016-11-23T10:00:00-05:00

Author(s): M. M. de Oliveira and C. E. Fiore
Recent papers have shown that spatial (quenched) disorder can suppress discontinuous absorbing phase transitions. Conversely, the scenario for temporal disorder is still unknown. To shed some light in this direction, we investigate its effect in three different two-dimensional models which are known…
[Phys. Rev. E 94, 052138] Published Wed Nov 23, 2016



Pinning-depinning transition in a stochastic growth model for the evolution of cell colony fronts in a disordered medium

2016-11-23T10:00:00-05:00

Author(s): Belén Moglia, Ezequiel V. Albano, and Nara Guisoni
We study a stochastic lattice model for cell colony growth, which takes into account proliferation, diffusion, and rotation of cells, in a culture medium with quenched disorder. The medium is composed of sites that inhibit any possible change in the internal state of the cells, representing the diso…
[Phys. Rev. E 94, 052139] Published Wed Nov 23, 2016



High-temperature ratchets with sawtooth potentials

2016-11-23T10:00:00-05:00

Author(s): Viktor M. Rozenbaum, Irina V. Shapochkina, Sheh-Yi Sheu, Dah-Yen Yang, and Sheng Hsien Lin
The concept of the effective potential is suggested as an efficient instrument to get a uniform analytical description of stochastic high-temperature on-off flashing and rocking ratchets. The analytical representation for the average particle velocity, obtained within this technique, allows descript…
[Phys. Rev. E 94, 052140] Published Wed Nov 23, 2016



Finite-size corrections and scaling for the dimer model on the checkerboard lattice

2016-11-23T10:00:00-05:00

Author(s): Nickolay Sh. Izmailian, Ming-Chya Wu, and Chin-Kun Hu
Lattice models are useful for understanding behaviors of interacting complex many-body systems. The lattice dimer model has been proposed to study the adsorption of diatomic molecules on a substrate. Here we analyze the partition function of the dimer model on a 2M×2N checkerboard lattice wrapped on…
[Phys. Rev. E 94, 052141] Published Wed Nov 23, 2016



Flaming 2π kinks in parametrically driven systems

2016-11-23T10:00:00-05:00

Author(s): E. Berrios-Caro, M. G. Clerc, and A. O. Leon
Macroscopic extended systems with dissipation and injection of energy can exhibit particlelike solutions. Dissipative kinks with an oscillatory cloak and a family of localized states that connect uniform symmetric states in a magnetic wire forced with a transversal oscillatory magnetic field and in …
[Phys. Rev. E 94, 052217] Published Wed Nov 23, 2016



Statistics of the stochastically forced Lorenz attractor by the Fokker-Planck equation and cumulant expansions

2016-11-23T10:00:00-05:00

Author(s): Altan Allawala and J. B. Marston
We investigate the Fokker-Planck description of the equal-time statistics of the three-dimensional Lorenz attractor with additive white noise. The invariant measure is found by computing the zero (or null) mode of the linear Fokker-Planck operator as a problem of sparse linear algebra. Two variants …
[Phys. Rev. E 94, 052218] Published Wed Nov 23, 2016



Random matrix theory for analyzing the brain functional network in attention deficit hyperactivity disorder

2016-11-23T10:00:00-05:00

Author(s): Rong Wang, Li Wang, Yong Yang, Jiajia Li, Ying Wu, and Pan Lin
Attention deficit hyperactivity disorder (ADHD) is the most common childhood neuropsychiatric disorder and affects approximately 6–7% of children worldwide. Here, we investigate the statistical properties of undirected and directed brain functional networks in ADHD patients based on random matrix th…
[Phys. Rev. E 94, 052411] Published Wed Nov 23, 2016



Formation of high-order acoustic Bessel beams by spiral diffraction gratings

2016-11-23T10:00:00-05:00

Author(s): Noé Jiménez, R. Picó, V. Sánchez-Morcillo, V. Romero-García, L. M. García-Raffi, and K. Staliunas
The formation of high-order Bessel beams by a passive acoustic device consisting of an Archimedes' spiral diffraction grating is theoretically, numerically, and experimentally reported in this paper. These beams are propagation-invariant solutions of the Helmholtz equation and are characterized by a…
[Phys. Rev. E 94, 053004] Published Wed Nov 23, 2016



Recirculation zones induce non-Fickian transport in three-dimensional periodic porous media

2016-11-23T10:00:00-05:00

Author(s): Eleonora Crevacore, Tiziana Tosco, Rajandrea Sethi, Gianluca Boccardo, and Daniele L. Marchisio
In this work, the influence of pore space geometry on solute transport in porous media is investigated performing computational fluid dynamics pore-scale simulations of fluid flow and solute transport. The three-dimensional periodic domains are obtained from three different pore structure configurat…
[Phys. Rev. E 94, 053118] Published Wed Nov 23, 2016



How long do particles spend in vortical regions in turbulent flows?

2016-11-23T10:00:00-05:00

Author(s): Akshay Bhatnagar, Anupam Gupta, Dhrubaditya Mitra, Rahul Pandit, and Prasad Perlekar
We obtain the probability distribution functions (PDFs) of the time that a Lagrangian tracer or a heavy inertial particle spends in vortical or strain-dominated regions of a turbulent flow, by carrying out direct numerical simulations of such particles advected by statistically steady, homogeneous, …
[Phys. Rev. E 94, 053119] Published Wed Nov 23, 2016



Large-scale dynamics of magnetic helicity

2016-11-23T10:00:00-05:00

Author(s): Moritz Linkmann and Vassilios Dallas
In this paper we investigate the dynamics of magnetic helicity in magnetohydrodynamic (MHD) turbulent flows focusing at scales larger than the forcing scale. Our results show a nonlocal inverse cascade of magnetic helicity, which occurs directly from the forcing scale into the largest scales of the …
[Phys. Rev. E 94, 053209] Published Wed Nov 23, 2016



Efficient time-sampling method in Coulomb-corrected strong-field approximation

2016-11-23T10:00:00-05:00

Author(s): Xiang-Ru Xiao, Mu-Xue Wang, Wei-Hao Xiong, and Liang-You Peng
One of the main goals of strong-field physics is to understand the complex structures formed in the momentum plane of the photoelectron. For this purpose, different semiclassical methods have been developed to seek an intuitive picture of the underlying mechanism. The most popular ones are the quant…
[Phys. Rev. E 94, 053310] Published Wed Nov 23, 2016



Mesoscale pattern formation of self-propelled rods with velocity reversal

2016-11-22T10:00:00-05:00

Author(s): Robert Großmann, Fernando Peruani, and Markus Bär
We study self-propelled particles with velocity reversal interacting by uniaxial (nematic) alignment within a coarse-grained hydrodynamic theory. Combining analytical and numerical continuation techniques, we show that the physics of this active system is essentially controlled by the reversal frequ…
[Phys. Rev. E 94, 050602(R)] Published Tue Nov 22, 2016



Avalanche statistics from data with low time resolution

2016-11-22T10:00:00-05:00

Author(s): Michael LeBlanc, Aya Nawano, Wendelin J. Wright, Xiaojun Gu, J. T. Uhl, and Karin A. Dahmen
Extracting avalanche distributions from experimental microplasticity data can be hampered by limited time resolution. We compute the effects of low time resolution on avalanche size distributions and give quantitative criteria for diagnosing and circumventing problems associated with low time resolu…
[Phys. Rev. E 94, 052135] Published Tue Nov 22, 2016



Identifying ergodicity breaking for fractional anomalous diffusion: Criteria for minimal trajectory length

2016-11-22T10:00:00-05:00

Author(s): Hanna Loch-Olszewska, Grzegorz Sikora, Joanna Janczura, and Aleksander Weron
In this paper, we study ergodic properties of α-stable autoregressive fractionally integrated moving average (ARFIMA) processes which form a large class of anomalous diffusions. A crucial practical question is how long trajectories one needs to observe in an experiment in order to claim that the ana…
[Phys. Rev. E 94, 052136] Published Tue Nov 22, 2016



Anisotropic invasion and its consequences in two-strategy evolutionary games on a square lattice

2016-11-22T10:00:00-05:00

Author(s): György Szabó, Levente Varga, and Mátyás Szabó
We have studied invasion processes in two-strategy evolutionary games on a square lattice for imitation rule when the players interact with their nearest neighbors. Monte Carlo simulations are performed for systems where the pair interactions are composed of a unit strength coordination game when va…
[Phys. Rev. E 94, 052314] Published Tue Nov 22, 2016



Equivalence between modularity optimization and maximum likelihood methods for community detection

2016-11-22T10:00:00-05:00

Author(s): M. E. J. Newman

This paper examines two common methods of community detection in networks, namely modularity maximization and the maximum likelihood method. The author shows an equivalence between these two methods, and explores some of its consequences.

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[Phys. Rev. E 94, 052315] Published Tue Nov 22, 2016



Irreversibility of the two-dimensional enstrophy cascade

2016-11-22T10:00:00-05:00

Author(s): E. Piretto, S. Musacchio, F. De Lillo, and G. Boffetta
We study the time irreversibility of the direct cascade in two-dimensional turbulence by looking at the time derivative of the square vorticity along Lagrangian trajectories, a quantity called metenstrophy. By means of extensive direct numerical simulations we measure the time irreversibility from t…
[Phys. Rev. E 94, 053116] Published Tue Nov 22, 2016



Drag reductions and the air-water interface stability of superhydrophobic surfaces in rectangular channel flow

2016-11-22T10:00:00-05:00

Author(s): Jingxian Zhang, Zhaohui Yao, and Pengfei Hao
Flow in a rectangular channel with superhydrophobic (SH) top and bottom walls was investigated experimentally. Different SH surfaces, including hierarchical structured surfaces and surfaces with different micropost sizes (width and spacing) but the same solid fraction, were fabricated and measured. …
[Phys. Rev. E 94, 053117] Published Tue Nov 22, 2016