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Published: 2017-11-23T09:02:48+00:00
2017-11-22T10:00:00+00:00
Author(s): Hyun-Chul Kim, Maxim V. Polyakov, Michał Praszałowicz, and Ghil-Seok YangIn the large ${N}_{c}$ limit both heavy and light baryons are described by the universal mean field, which allows us to relate the properties of heavy baryons to light ones. With the only input from the decays of light octet baryons (due to the universality of the chiral mean field), excellent descr...
2017-11-22T10:00:00+00:00
Author(s): Bharat RatraTo derive a power spectrum for energy density inhomogeneities in a closed universe, we study a spatially-closed inflation-modified hot big bang model whose evolutionary history is divided into three epochs: an early slowly-rolling scalar field inflation epoch and the usual radiation and nonrelativis...
2017-11-22T10:00:00+00:00
Author(s): Donato Bini and Thibault DamourA novel approach for extracting gauge-invariant information about spin-orbit coupling in gravitationally interacting binary systems is introduced. This approach is based on the “scattering holonomy”, i.e. the integration (from the infinite past to the infinite future) of the differential spin evolut...
2017-11-22T10:00:00+00:00
Author(s): Katsuki Aoki and Shinji MukohyamaWe propose a scenario that can naturally explain the observed dark matter-baryon ratio in the context of bimetric theory with a chameleon field. We introduce two additional gravitational degrees of freedom, the massive graviton and the chameleon field, corresponding to dark matter and dark energy, r...
2017-11-22T10:00:00+00:00
Author(s): Pedro V. P. Cunha, José A. Font, Carlos Herdeiro, Eugen Radu, Nicolas Sanchis-Gual, and Miguel ZilhãoSpherically symmetric bosonic stars are one of the few examples of gravitating solitons that are known to form dynamically, via a classical process of (incomplete) gravitational collapse. As stationary solutions of the Einstein–Klein-Gordon or the Einstein–Proca theory, bosonic stars may also become...
2017-11-22T10:00:00+00:00
Author(s): J. Lange et al.We present and assess a Bayesian method to interpret gravitational wave signals from binary black holes. Our method directly compares gravitational wave data to numerical relativity (NR) simulations. In this study, we present a detailed investigation of the systematic and statistical parameter estim...
2017-11-22T10:00:00+00:00
Author(s): Lee SmolinWe show that the simplicity constraints, which define the dynamics of spin foam models, imply, and are implied by, the first law of thermodynamics, when the latter is applied to causal diamonds in the quantum spacetime. This result reveals an intimate connection between the holographic nature of gra...
2017-11-22T10:00:00+00:00
Author(s): D. S. Kaparulin and S. L. LyakhovichThe classical spinning particles are considered such that quantization of classical model leads to an irreducible massive representation of the Poincaré group. The class of gauge equivalent classical particle world lines is shown to form a $[(d+1)/2]$-dimensional world sheet in $d$-dimensional Minko...
2017-11-22T10:00:00+00:00
Author(s): Thomas A. Ryttov and Robert ShrockWe study properties of asymptotically free vectorial gauge theories with gauge groups $G=\mathrm{SO}({N}_{c})$ and $G=\mathrm{Sp}({N}_{c})$ and ${N}_{f}$ fermions in a representation $R$ of $G$, at an infrared (IR) zero of the beta function, ${α}_{\mathrm{IR}}$, in the non-Abelian Coulomb phase. The...
2017-11-22T10:00:00+00:00
Author(s): Francesco Bussola, Claudio Dappiaggi, Hugo R. C. Ferreira, and Igor KhavkineWe consider a real, massive scalar field in Bañados-Teitelboim-Zanelli spacetime, a $2+1$-dimensional black hole solution of Einstein’s field equations with a negative cosmological constant. First, we analyze the space of classical solutions in a mode decomposition, and we characterize the collectio...
2017-11-22T10:00:00+00:00
Author(s): Dileep P. Jatkar and K. NarayanWe study one-dimensional chains of ghost-spins with nearest neighbor interactions amongst them, developing further the study of ghost-spins in previous work, defined as 2-state spin variables with indefinite norm. First we study finite ghost-spin chains with Ising-like nearest neighbor interactions:...
2017-11-21T10:00:00+00:00
Author(s): K. Abe et al. (The T2K Collaboration)The T2K experiment reports an updated analysis of neutrino and antineutrino oscillations in appearance and disappearance channels. A sample of electron neutrino candidates at Super-Kamiokande in which a pion decay has been tagged is added to the four single-ring samples used in previous T2K oscillat...
2017-11-21T10:00:00+00:00
Author(s): A. N. Hiller BlinWe perform a complete and systematic calculation of the octet-baryon form factors within the fully covariant approach of $SU(3)$ chiral perturbation theory at $\mathcal{O}({p}^{3})$. We use the extended on-mass shell renormalization scheme and include explicitly the vector mesons and the spin-$3/2$ ...
2017-11-21T10:00:00+00:00
Author(s): Peng Zhang, Yan-Qing Ma, Qian Chen, and Kuang-Ta ChaoFragmentation is the dominant mechanism for hadron production with high transverse momentum. For spin-triplet $S$-wave heavy quarkonium production, contribution of gluon fragmenting to color-singlet channel has been numerically calculated since 1993. However, there is still no analytic expression av...
2017-11-21T10:00:00+00:00
Author(s): Alexandr G. Chumakov, Thomas Gutsche, Valery E. Lyubovitskij, and Ivan SchmidtWe study the exclusive production of scalar $S={0}^{++}$ and tensor $T={2}^{++}$ mesons through single-photon annihilation ${e}^{+}{e}^{−}→{γ}^{*}→γS(T)$. Using QCD compositeness of the involved hadrons considered as quark-antiquark systems, the prediction for the scaling of the differential cross s...
2017-11-21T10:00:00+00:00
Author(s): Tomomi Ishikawa, Yan-Qing Ma, Jian-Wei Qiu, and Shinsuke YoshidaQuasiparton distribution functions have received a lot of attention in both the perturbative QCD and lattice QCD communities in recent years because they not only carry good information on the parton distribution functions but also could be evaluated by lattice QCD simulations. However, unlike the p...
2017-11-21T10:00:00+00:00
Author(s): Ignacio Borsa, Rodolfo Sassot, and Marco StratmannWe investigate the feasibility of constraining parton distribution functions in the proton through a comparison with data on semi-inclusive deep-inelastic lepton-nucleon scattering. Specifically, we reweight replicas of these distributions according to how well they reproduce recent, very precise ch...
2017-11-21T10:00:00+00:00
Author(s): Boram Yoon, Michael Engelhardt, Rajan Gupta, Tanmoy Bhattacharya, Jeremy R. Green, Bernhard U. Musch, John W. Negele, Andrew V. Pochinsky, Andreas Schäfer, and Sergey N. SyritsynLattice QCD calculations of transverse momentum-dependent parton distribution functions (TMDs) in nucleons are presented, based on the evaluation of nucleon matrix elements of quark bilocal operators with a staple-shaped gauge connection. Both time-reversal odd effects, namely, the generalized Siver...
2017-11-21T10:00:00+00:00
Author(s): Edward Gillman and Arttu RajantieThe authors use matrix product states to study kinks in a ${\varphi}^{4}$ theory in 1+1 dimensions. Matrix product states are a way of using variational methods in a field theory, and undoubtedly of utility in a wide variety of other problems.
(image)2017-11-21T10:00:00+00:00
Author(s): Felipe Rojas-Abatte, Maria Luisa Mora, Jose Urbina, and Alfonso R. ZerwekhWe study the possibility of a dark matter candidate having its origin in an extended Higgs sector which, at least partially, is related to a new strongly interacting sector. More concretely, we consider an i2HDM (i.e., a Type-I two Higgs doublet model supplemented with a ${Z}_{2}$ under which the no...
2017-11-21T10:00:00+00:00
Author(s): Tomoyuki Maruyama and Toshitaka TatsumiWe study the magnetic properties of quark matter in the Nambu–Jona-Lasinio model with the tensor interaction. The spin-polarized phase given by the tensor interaction survives even when the quark mass is zero, while that given by the axial-vector interaction disappears. There are two kinds of spin-p...
2017-11-21T10:00:00+00:00
Author(s): Zvi Bern, Michael Enciso, Harald Ita, and Mao ZengWe show that dual conformal symmetry, mainly studied in planar $\mathcal{N}=4$ super-Yang-Mills theory, has interesting consequences for Feynman integrals in nonsupersymmetric theories such as QCD, including the nonplanar sector. A simple observation is that dual conformal transformations preserve u...
2017-11-21T10:00:00+00:00
Author(s): A. V. Karpishkov, M. A. Nefedov, and V. A. SaleevWe calculate the angular distribution spectra between beauty ($B$) and antibeauty ($\overline{B}$) mesons in proton-proton collisions in the leading order approximation of the parton Reggeization approach consistently merged with the next-to-leading order corrections from the emission of an addition...
2017-11-21T10:00:00+00:00
Author(s): S. P. Gavrilov, D. M. Gitman, and A. A. ShishmarevParticle scattering and vacuum instability in a constant inhomogeneous electric field of particular peak configuration that consists of two (exponentially increasing and exponentially decreasing) independent parts are studied. It presents a new kind of external field where exact solutions of the Dir...
2017-11-21T10:00:00+00:00
Author(s): S. Suvorova, P. Clearwater, A. Melatos, L. Sun, W. Moran, and R. J. EvansA hidden Markov model (HMM) scheme for tracking continuous-wave gravitational radiation from neutron stars in low-mass x-ray binaries (LMXBs) with wandering spin is extended by introducing a frequency-domain matched filter, called the $\mathcal{J}$-statistic, which sums the signal power in orbital s...
2017-11-21T10:00:00+00:00
Author(s): Tim Linden, Katie Auchettl, Joseph Bramante, Ilias Cholis, Ke Fang, Dan Hooper, Tanvi Karwal, and Shirley Weishi LiObservations by HAWC and Milagro have detected bright and spatially extended TeV $γ$-ray sources surrounding the Geminga and Monogem pulsars. We argue that these observations, along with a substantial population of other extended TeV sources coincident with pulsar wind nebulae, constitute a new morp...
2017-11-21T10:00:00+00:00
Author(s): Podist Kurashvili, Konstantin A. Kouzakov, Levan Chotorlishvili, and Alexander I. StudenikinA theoretical analysis of possible influence of neutrino magnetic moments on the propagation of ultrahigh-energy cosmic neutrinos in the interstellar space is carried out under the assumption of two-neutrino mixing. The exact solution of the effective equation for neutrino evolution in the presence ...
2017-11-21T10:00:00+00:00
Author(s): Sanjeev Dhurandhar, Anuradha Gupta, Bhooshan Gadre, and Sukanta BoseWe describe a general mathematical framework for ${χ}^{2}$ discriminators in the context of the compact binary coalescence (CBC) search. We show that with any ${χ}^{2}$ is associated a vector bundle over the signal manifold, that is, the manifold traced out by the signal waveforms in the function sp...
2017-11-21T10:00:00+00:00
Author(s): Laura Castelló Gomar, Guillermo A. Mena Marugán, Daniel Martín de Blas, and Javier OlmedoWe investigate the consequences of the hybrid quantization approach for primordial perturbations in loop quantum cosmology, obtaining predictions for the cosmic microwave background and comparing them with data collected by the Planck mission. In this work, we complete previous studies about the sca...
2017-11-21T10:00:00+00:00
Author(s): Rodrigo Maier and Ivano Damião SoaresWe examine the Hamiltonian dynamics of bouncing Bianchi IX cosmologies with three scale factors in Hořava-Lifshitz (HL) gravity. We assume a positive cosmological constant plus noninteracting dust and radiation as the matter content of the models. In this framework the modified field equations conta...
2017-11-21T10:00:00+00:00
Author(s): Shuntaro Mizuno and Shinji MukohyamaWe study primordial perturbations from hyperinflation, proposed recently and based on a hyperbolic field-space. In the previous work, it was shown that the field-space angular momentum supported by the negative curvature modifies the background dynamics and enhances fluctuations of the scalar fields...
2017-11-21T10:00:00+00:00
Author(s): Xing-Hui Feng, Hyat Huang, Zhan-Feng Mai, and Hong LüWe show that there exists a critical point for the coupling constants in Einsteinian cubic gravity in which the linearized equations on the maximally symmetric vacuum vanish identically. We construct an exact isotropic bounce universe in the critical theory in four dimensions. The comoving time runs...
2017-11-21T10:00:00+00:00
Author(s): Mengjie Wang (王梦杰), Carlos Herdeiro, and Jiliang Jing (荆继良)We study Dirac quasinormal modes of Schwarzschild–anti–de Sitter (Schwarzschild-AdS) black holes, following the generic principle for allowed boundary conditions proposed in [M. Wang, C. Herdeiro, and M. O. P. Sampaio, Phys. Rev. D 92, 124006 (2015).]. After deriving the equations of motion for Dira...
2017-11-21T10:00:00+00:00
Author(s): Antonio De Felice, Shinji Mukohyama, and Michele OliosiThe minimal theory of quasidilaton massive gravity allows for a stable self-accelerating de Sitter solution in a wide range of parameters. On the other hand, in order for the theory to be compatible with local gravity tests, the fifth force due to the quasidilaton scalar needs to be screened at loca...
2017-11-21T10:00:00+00:00
Author(s): Toshiaki Ono, Asahi Ishihara, and Hideki AsadaBy using the Gauss-Bonnet theorem, the bending angle of light in a static, spherically symmetric and asymptotically flat spacetime has been recently discussed, especially by taking account of the finite distance from a lens object to a light source and a receiver [Ishihara, Suzuki, Ono, Asada, Phys....
2017-11-21T10:00:00+00:00
Author(s): Simone Giombi, Igor R. Klebanov, and Grigory TarnopolskyWe study the spectrum of the large $N$ quantum field theory of bosonic rank-3 tensors, the quartic interactions of which are such that the perturbative expansion is dominated by the melonic diagrams. We use the Schwinger-Dyson equations to determine the scaling dimensions of the bilinear operators o...
2017-11-20T10:00:00+00:00
Author(s): B. Aharmim et al. (SNO Collaboration)Neutron-antineutron oscillations in nature would violate baryon number and indicate a potential underlying mechanism for the observed matter-antimatter asymmetry. Sudbury Neutrino Observatory reports limits on neutron-antineutron oscillations for the first time in deuteron. These limits establish important constraints on beyond-the-Standard-Model scenarios that involve baryon-number violation.
(image)2017-11-20T10:00:00+00:00
Author(s): Bing Chen and Xiang LiuInspired by the recently observed ${\mathrm{Ω}}_{c}^{0}$ states at LHCb, we decode their properties by performing an analysis of their mass spectrum and decay behavior. Our studies show that the five narrow states, i.e., ${\mathrm{Ω}}_{c}(3000{)}^{0}$, ${\mathrm{Ω}}_{c}(3050{)}^{0}$, ${\mathrm{Ω}}_{...
2017-11-20T10:00:00+00:00
Author(s): B. Ducloué, H. Hänninen, T. Lappi, and Y. ZhuWe study quantitatively the importance of the recently derived next-to-leading-order corrections to the deep inelastic scattering structure functions at small $x$ in the dipole formalism. We show that these corrections can be significant and depend on the factorization scheme used to resum large log...
2017-11-20T10:00:00+00:00
Author(s): Hooman DavoudiaslWe consider a feeble repulsive interaction between ordinary matter and dark matter, with a range similar to or larger than the size of the Earth. Dark matter can thus be repelled from the Earth, leading to null results in direct detection experiments, regardless of the strength of the short-distance...
2017-11-20T10:00:00+00:00
Author(s): Patrick Tunney, Jose Miguel No, and Malcolm FairbairnWe propose a new search for dark matter at the LHC, characteristic of scenarios beyond the Standard Model with a pseudoscalar portal between the visible and dark sectors. This search, leading to a $\overline{b}bZ(→ℓℓ)+{\overline{)E}}_{T}$ final state, reaches large regions of parameter space not pro...
2017-11-20T10:00:00+00:00
Author(s): Pedro PasquiniWe perform a simulation on the DUNE experiment to probe the capability of future neutrino long-baseline experiments to constrain the parameter space of high-energy models by using the correlation between the atmospheric and reactor mixing angles. As an example, we analyze the tetrahedral flavor symm...
2017-11-20T10:00:00+00:00
Author(s): Jonathan L. Feng and Jordan SmolinskyDark photons in the MeV to GeV mass range are important targets for experimental searches. We consider the case where dark photons ${A}^{′}$ decay invisibly to hidden dark matter $X$ through ${A}^{′}→XX$. For generic masses, proposed accelerator searches are projected to probe the thermal target reg...
2017-11-20T10:00:00+00:00
Author(s): Chuan-Hung Chen and Takaaki Nomura${L}_{μ}−{L}_{τ}$ gauge boson (${Z}^{′}$) with a mass in the MeV to GeV region can resolve not only the muon $g−2$ excess, but also the gap in the high-energy cosmic neutrino spectrum at IceCube. It was recently proposed that such a light gauge boson can be detected during the Belle II experiment wi...
2017-11-20T10:00:00+00:00
Author(s): Shinya Kanemura, Kodai Sakurai, and Hiroaki SugiyamaWe propose a model to explain the tiny masses of neutrinos with lepton number conservation, where neither too heavy particles beyond the TeV-scale nor tiny coupling constants are required. Assignments of conserving lepton numbers to new fields result in an unbroken ${Z}_{2}$ symmetry that stabilizes...
2017-11-20T10:00:00+00:00
Author(s): Yan Wu, De-fu Hou, and Hai-cang RenWe assess the applicability of the Wigner function formulation in its present form to the chiral magnetic effect and note some issues regarding the conservation and the consistency of the electric current in the presence of an inhomogeneous and time-dependent axial chemical potential. The problems a...
2017-11-20T10:00:00+00:00
Author(s): Sergey VolkovThis paper presents a new method of numerical computation of the mass-independent QED contributions to the electron anomalous magnetic moment which arise from Feynman graphs without closed electron loops. The method is based on a forestlike subtraction formula that removes all ultraviolet and infrar...
2017-11-20T10:00:00+00:00
Author(s): Ph. Boucaud, F. De Soto, J. Rodríguez-Quintero, and S. ZafeiropoulosThe authors of [Phys. Rev. D 94, 014502 (2016)] reported about a careful analysis of the impact of lattice artifacts on the $SU(3)$ gauge-field propagators. In particular, they found that the low-momentum behavior of the renormalized propagators depends on the lattice bare coupling and interpreted t...
2017-11-20T10:00:00+00:00
Author(s): Anthony G. Duarte, Orlando Oliveira, and Paulo J. SilvaThe quenched gluon and ghost propagator data published in [Duarte et al. Phys. Rev. D 94, 014502 (2016).] is reanalyzed following the suggestion of [Boucaud et al. Phys. Rev. D 96, 098501 (2017).] to resolve the differences between the infrared data of the simulations. Our results confirm that the p...
2017-11-20T10:00:00+00:00
Author(s): Linus WulffFactorization of scattering is the hallmark of integrable $1+1$ dimensional quantum field theories. For factorization of scattering to be possible the set of masses and momenta must be conserved in any two-to-two scattering process. We use this fact to constrain the form of the Ramond-Ramond fluxes ...
2017-11-20T10:00:00+00:00
Author(s): Günter SiglWe compute the fluxes of radio photons from conversion of axionlike particle dark matter in cosmic magnetic fields. We find that for axionlike particle masses around ${10}^{−6}\text{ }\text{ }\mathrm{eV}$ and effective coupling constants to photons ${g}_{aγ}≳{10}^{−13}\text{ }\text{ }{\mathrm{GeV}}^...
2017-11-20T10:00:00+00:00
Author(s): C. GermanàHigh frequency quasiperiodic oscillations (HF QPOs) detected in the power spectra of low mass x-ray binaries (LMXBs) could unveil the fingerprints of gravitation in the strong field regime. Using the energy-momentum relation we calculate the energy a clump of plasma orbiting in the accretion disk re...
2017-11-20T10:00:00+00:00
Author(s): Dmitry Gorbunov and Anna TokarevaThe Starobinsky model of modified gravity suggested to explain dark energy may also be considered in the astrophysical context. Recently it has been pointed out that in contracting regions curvature oscillations around the general relativity (GR) value may lead to the production of high energy parti...
2017-11-20T10:00:00+00:00
Author(s): Larissa Santos, Wen Zhao, Elisa G. M. Ferreira, and Jerome QuintinIn this paper, we perform a forecast analysis to test the capacity of future baryon acoustic oscillation (BAO) and cosmic microwave background (CMB) experiments to constrain phenomenological interacting dark energy models using the Fisher matrix formalism. We consider a Euclid-like experiment, in wh...
2017-11-20T10:00:00+00:00
Author(s): John T. Giblin, Jr., James B. Mertens, Glenn D. Starkman, and Andrew R. ZentnerWe compute the weak lensing convergence power spectrum, ${C}_{ℓ}^{κκ}$, in a dust-filled universe using fully nonlinear general relativistic simulations. The spectrum is then compared to more standard, approximate calculations by computing the Bardeen (Newtonian) potentials in linearized gravity and...
2017-11-20T10:00:00+00:00
Author(s): D. J. Brooker, N. C. Tsamis, and R. P. WoodardWe give final shape to a recent formalism for deriving the functional forms of the primordial power spectra of single-scalar potential models and theories which are related to them by conformal transformation. An excellent analytic approximation is derived for the nonlocal correction factors which a...
2017-11-20T10:00:00+00:00
Author(s): Sandipan SenguptaVacuum spacetime solutions, which are representations of a bridgelike geometry, are constructed as purely geometric sources of curvature in gravity theory. These configurations satisfy the first-order equations of motion everywhere. Each of them consists of two identical sheets of asymptotically fla...
2017-11-20T10:00:00+00:00
Author(s): Alexey Golovnev and Aleksandr TrukhinWe report on our independent investigations of the puzzle of cosmological perturbations in extended quasidilaton. We confirm the claims of presence of the Boulware-Deser ghost. We use both the language of cosmological perturbations with broken diffeomorphisms and the Stückelberg approach.
2017-11-20T10:00:00+00:00
Author(s): S. Mukherjee, L. Salazar, J. Mittelstaedt, and O. ValdezSupernovae in our universe are potential sources of gravitational waves (GW) that could be detected in a network of GW detectors like LIGO and Virgo. Core-collapse supernovae are rare, but the associated gravitational radiation is likely to carry profuse information about the underlying processes dr...
2017-11-20T10:00:00+00:00
Author(s): Yuta Hamada, Min-Seok Seo, and Gary ShiuRecently, large gauge transformation (LGT), the residual gauge symmetry after gauge fixing that survives at null infinity, has drawn much attention concerning soft theorems and the memory effect. We point out that LGT charges in quantum electrodynamics are in fact one of noncompact generators of the...
2017-11-20T10:00:00+00:00
Author(s): Tsutomu Kobayashi, Hayato Motohashi, and Teruaki Suyama2017-11-17T10:00:00+00:00
Author(s): S. Dobbs, Kamal K. Seth, A. Tomaradze, T. Xiao, and G. BonviciniUsing ${e}^{+}{e}^{−}$ annihilation data taken at the CESR collider with the CLEO-c detector, measurements of hyperon pair production cross sections and elastic and transition electromagnetic form factors have been made at the charmonium resonances: $ψ(2S)$, $\sqrt{s}=3.69\text{ }\text{ }\mathrm{GeV...
2017-11-17T10:00:00+00:00
Author(s): Carlo Michel Carloni Calame, Mauro Chiesa, Homero Martinez, Guido Montagna, Oreste Nicrosini, Fulvio Piccinini, and Alessandro ViciniWe perform a comprehensive analysis of electroweak, QED, and mixed QCD-electroweak corrections underlying the precise measurement of the $W$-boson mass ${M}_{W}$ at hadron colliders. By applying a template fitting technique, we detail the impact on ${M}_{W}$ of next-to-leading order electroweak and ...
2017-11-17T10:00:00+00:00
Author(s): Li-Sheng Geng, Benjamín Grinstein, Sebastian Jäger, Jorge Martin Camalich, Xiu-Lei Ren, and Rui-Xiang ShiTests of lepton-universality as rate ratios in $b→sℓℓ$ transitions can be predicted very accurately in the Standard Model. The deficits with respect to expectations reported by the LHCb experiment in muon-to-electron ratios of the $B→{K}^{(*)}ℓℓ$ decay rates thus point to genuine manifestations of l...
2017-11-17T10:00:00+00:00
Author(s): Raza Sabbir SufianWe determine the nucleon neutral weak electromagnetic form factors ${G}_{E,M}^{Z,p(n)}$ by combining results from light-front holographic QCD and lattice QCD calculations. We deduce nucleon electromagnetic form factors from light-front holographic QCD which provides a good parametrization of the exp...
2017-11-17T10:00:00+00:00
Author(s): B. DuclouéForward Drell-Yan production at high energy can provide important constraints on gluon densities at small $x$, in the saturation regime. In this work, we focus on the nuclear modification of this process, which could be measured at the LHC in the near future. For this, we employ the color dipole app...
2017-11-17T10:00:00+00:00
Author(s): M. N. Chernodub, V. A. Goy, and A. V. MolochkovWe show that the Casimir effect may lead to a deconfinement phase transition induced by the presence of boundaries in confining gauge theories. Using first-principle numerical simulations we demonstrate this phenomenon in the simplest case of the compact lattice electrodynamics in two spatial dimens...
2017-11-17T10:00:00+00:00
Author(s): Joshua P. Ellis and Raymond R. VolkasWe analyze the phenomenology of a model of neutrino masses inspired by unification in ${\mathrm{E}}_{6}$ in which the exotic neutrinos can be present at low scales. The model introduces vector-like isosinglet down-type quarks, vector-like isodoublet leptons, neutrino singlets and two ${Z}^{′}$ boson...
2017-11-17T10:00:00+00:00
Author(s): Takaaki Nomura and Hiroshi OkadaWe propose an extension of the standard model introducing large $SU(2{)}_{L}$ multiplet fields which are quartet and septet scalars and quintet Majorana fermions. These multiplets can induce the neutrino masses via interactions with the $SU(2)$ doublet leptons. We then find the neutrino masses are s...
2017-11-17T10:00:00+00:00
Author(s): André de Gouvêa and Kevin J. KellyTesting, in a nontrivial, model-independent way, the hypothesis that the three-massive-neutrinos paradigm properly describes nature is among the main goals of the current and the next generation of neutrino oscillation experiments. In the coming decade, the DUNE and Hyper-Kamiokande experiments will...
2017-11-17T10:00:00+00:00
Author(s): M. N. Chernodub and Shinya GongyoWe discuss free Dirac fermions rotating uniformly inside a cylindrical cavity in the presence of background magnetic field parallel to the cylinder axis. We show that, in addition to the known bulk states, the system contains massive edge states with the masses inversely proportional to the radius o...
2017-11-17T10:00:00+00:00
Author(s): Dan Hooper, Ilias Cholis, Tim Linden, and Ke FangRecent measurements of the Geminga and $\mathrm{B}0656+14$ pulsars by the gamma-ray telescope HAWC (along with earlier measurements by Milagro) indicate that these objects generate significant fluxes of very high-energy electrons. In this paper, we use the very high-energy gamma-ray intensity and sp...
2017-11-17T10:00:00+00:00
Author(s): Bo Wang and Yang ZhangWe present a systematic study of the 2nd-order scalar, vector, and tensor metric perturbations in the Einstein-de Sitter Universe in synchronous coordinates. For the scalar-scalar coupling between 1st-order perturbations, we decompose the 2nd-order perturbed Einstein equation into the respective fie...
2017-11-17T10:00:00+00:00
Author(s): Yang Zhang, Fei Qin, and Bo WangWe study the second-order perturbations in the Einstein-de Sitter Universe in synchronous coordinates. We solve the second-order perturbed Einstein equation with scalar-tensor and tensor-tensor couplings between 1st-order perturbations, and obtain, for each coupling, the solutions of scalar, vector,...
2017-11-17T10:00:00+00:00
Author(s): Masooma Ali and Sanjeev S. SeahraWe study the polymer quantization of a homogeneous massive scalar field in the early Universe using a prescription inequivalent to those previously appearing in the literature. Specifically, we assume a Hilbert space for which the scalar field momentum is well defined but its amplitude is not. This ...
2017-11-17T10:00:00+00:00
Author(s): Mathew S. Madhavacheril, Nicholas Battaglia, and Hironao MiyatakeFuture high-resolution measurements of the cosmic microwave background (CMB) will produce catalogs of tens of thousands of galaxy clusters through the thermal Sunyaev-Zel’dovich (tSZ) effect. We forecast how well different configurations of a CMB Stage-4 experiment can constrain cosmological paramet...
2017-11-17T10:00:00+00:00
Author(s): Jeong-Pyong Hong and Masahiro KawasakiWe derive the decay rate of a gauged Q-ball into fermions, applying the leading semiclassical approximation. We find that more particles come out from the surface of a gauged Q-ball, compared to the case of a global Q-ball, due to the electric repulsion. We show, however, that the decay rate of a ga...
2017-11-17T10:00:00+00:00
Author(s): Manuel Hohmann and Andreas SchärerWe calculate the parameters $γ$ and $β$ in the parametrized post-Newtonian (PPN) formalism for scalar-tensor gravity (STG) with an arbitrary potential, under the assumption that the source matter is given by a nonrotating sphere of constant density, pressure, and internal energy. For our calculation...
2017-11-17T10:00:00+00:00
Author(s): Anuradha Samajdar and K. G. ArunCertain alternative theories of gravity predict that gravitational waves will disperse as they travel from the source to the observer. The recent binary black hole observations by Advanced-LIGO have set limits on a modified dispersion relation from the constraints on their effects on gravitational-w...
2017-11-17T10:00:00+00:00
Author(s): Cintia C. Menchon, Gonzalo J. Olmo, and Diego Rubiera-GarciaWe study Born-Infeld gravity coupled to an anisotropic fluid in a static, spherically symmetric background. The free function characterizing the fluid is selected on the following grounds: i) recovery of the Reissner-Nordström solution of General Relativity at large distances, ii) fulfillment of cla...
2017-11-17T10:00:00+00:00
Author(s): S. P. Miao, T. Prokopec, and R. P. WoodardWe study one loop quantum gravitational corrections to the long range force induced by the exchange of a massless scalar between two massive scalars. The various diagrams contributing to the flat space $S$ matrix are evaluated in a general covariant gauge, and we show that dependence on the gauge pa...
2017-11-17T10:00:00+00:00
Author(s): Mariateresa Crosta, Andrea Geralico, Mario G. Lattanzi, and Alberto VecchiatoWith the launch of the Gaia mission, general relativity (GR) is now at the very core of astrometry. Given the high level of accuracy of the measurements, the development of a suitable relativistic model for carrying out the correct data processing and analysis has become a critical necessity; its pr...
2017-11-17T10:00:00+00:00
Author(s): Benoit Douçot, Christian Ecker, Ayan Mukhopadhyay, and Giuseppe PolicastroSemiholographic models of non-Fermi liquids have been shown to have generically stable generalized quasiparticles on the Fermi surface. Although these excitations are broad and exhibit particle-hole asymmetry, they were argued to be stable from interactions at the Fermi surface. In this work, we use...
2017-11-17T10:00:00+00:00
Author(s): Mohammad M. QaemmaqamiWe study the butterfly effect by considering shock wave solutions near the horizon of the anti–de Sitter black hole in some three-dimensional gravity models including 3D Einstein gravity, minimal massive 3D gravity, new massive gravity, generalized massive gravity, Born-Infeld 3D gravity, and new bi...
2017-11-17T10:00:00+00:00
Author(s): Steven Abel and Richard J. StewartTwo independent criteria are presented that together guarantee exponential suppression of the two-loop cosmological constant in nonsupersymmetric heterotic strings. They are derived by performing calculations in both the full string theory and in its effective field theory, and come respectively fro...
2017-11-16T10:00:00+00:00
Author(s): T. Aaltonen et al. (The CDF Collaboration)A measurement of the inclusive production cross section of isolated prompt photons in proton-antiproton collisions at center-of-mass energy $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ is presented. The results are obtained using the full Run II data sample collected with the Collider Detector at the...
2017-11-16T10:00:00+00:00
Author(s): Masaaki Kuroda and Dieter SchildknechtWe investigate the mass range of the quark-antiquark fluctuations of the photon that are active in producing the total photoabsorption cross section in the color dipole picture, emphasizing the notions of color transparency and saturation. We consider the implications of measurements at future exten...
2017-11-16T10:00:00+00:00
Author(s): Lukas Rammelmüller, William J. Porter, Joaquín E. Drut, and Jens BraunThe calculation of the ground state and thermodynamics of mass-imbalanced Fermi systems is a challenging many-body problem. Even in one spatial dimension, analytic solutions are limited to special configurations and numerical progress with standard Monte Carlo approaches is hindered by the sign prob...
2017-11-16T10:00:00+00:00
Author(s): Partha Konar, Tanmoy Mondal, and Abhaya Kumar SwainThe ongoing perplexing scenario with no hints of new physics at the Large Hadron Collider can be elucidated amicably if the exotic particle spectrum in many of the well-motivated theoretical models possesses degenerate mass. We investigate the usefulness of different kinematic variables sensitive to...
2017-11-16T10:00:00+00:00
Author(s): Tommi Alanne, Diogo Buarque Franzosi, and Mads T. FrandsenWe consider a model of dynamical electroweak symmetry breaking with a partially composite Goldstone Higgs boson. The model is based on a strongly interacting fermionic sector coupled to a fundamental scalar sector via Yukawa interactions. The $\mathrm{SU}(4)×\mathrm{SU}(4)$ global symmetry of these ...
2017-11-16T10:00:00+00:00
Author(s): Mohammad Alakhras, Nidal Chamoun, Xue-Lei Chen, Chao-Shang Huang, and Chun LiuWe consider an extension of the Higgs sector in the standard model with six Higgs doublets. The gauge couplings are unified without supersymmetry in this model. The lightest of the extra Higgs particles, being stabilized by a discrete symmetry imposed from the outset, presents a plausible candidate ...
2017-11-16T10:00:00+00:00
Author(s): Marcela Carena, Ying-Ying Li, Camila S. Machado, Pedro A. N. Machado, and Carlos E. M. WagnerWe show that, in the presence of bulk masses, sterile neutrinos propagating in large extra dimensions (LED) can induce electron-neutrino appearance effects. This is in contrast to what happens in the standard LED scenario, and hence LED models with explicit bulk masses have the potential to address ...
2017-11-16T10:00:00+00:00
Author(s): Tommi Alanne, Aurora Meroni, and Kimmo TuominenWe consider an extension of the Standard Model with the global symmetry-breaking pattern $\mathrm{SO}(5)/\mathrm{SO}(4)$, where the Higgs boson arises as a pseudo-Nambu-Goldstone boson. The scalar content of the theory consists of a Standard-Model-like Higgs field and an extra real scalar field. The...
2017-11-16T10:00:00+00:00
Author(s): Moira I. Gresham, Hou Keong Lou, and Kathryn M. ZurekModels of asymmetric dark matter (ADM) with a sufficiently attractive and long-range force give rise to stable bound objects, analogous to nuclei in the Standard Model, called nuggets. We study the properties of these nuggets and compute their profiles and binding energies. Our approach, applicable ...
2017-11-16T10:00:00+00:00
Author(s): R. M. AguirreThe effective masses of the neutral mesons in a hadronic medium and under an external magnetic field are evaluated as functions of the baryonic density and the field intensity. For this purpose, the meson polarization is evaluated in the one-loop approximation using a quantum hadrodynamics model whi...
2017-11-16T10:00:00+00:00
Author(s): Zhi-Yong Zhou and Zhiguang Xiao2017-11-16T10:00:00+00:00
Author(s): Massimo GiovanniniThe dynamics of bouncing universes is characterized by violating certain coordinate-invariant restrictions on the total energy-momentum tensor, customarily referred to as energy conditions. Although there could be epochs in which the null energy condition is locally violated, it may perhaps be enfor...
2017-11-16T10:00:00+00:00
Author(s): Atsushi NishizawaThe direct detections of gravitational waves (GW) from merging binary black holes (BBH) by aLIGO have brought us a new opportunity to utilize BBH for a measurement of the Hubble constant. In this paper, we point out that there exists a small number of BBH that gives significantly small sky localizat...
2017-11-16T10:00:00+00:00
Author(s): Nikolay Kozyrev, Sergey Krivonos, Olaf Lechtenfeld, Armen Nersessian, and Anton SutulinWe propose a generalization of the Witten-Dijkgraaf-Verlinde-Verlinde (WDVV) equation from ${\mathbb{R}}^{n}$ to an arbitrary Riemannian manifold. Its form is obtained by extending the relation of the WDVV equation with $\mathcal{N}=4$ supersymmetric $n$-dimensional mechanics from flat to curved spa...
2017-11-16T10:00:00+00:00
Author(s): Ekaterina Moreva, Marco Gramegna, Giorgio Brida, Lorenzo Maccone, and Marco GenoveseIn this paper we provide an experimental illustration of Page and Wootters’ quantum time mechanism that is able to describe two-time quantum correlation functions. This allows us to test a Leggett-Garg inequality, showing a violation from the “internal” observer point of view. The “external” observe...