Electrodynamics

Tue, 02 Feb 2010 04:00:00 GMT

Source: prb.aps.org --- Monday, February 01, 2010
Author(s): Alexander A. Penin [Phys. Rev. B 81, 089902] Published Tue Feb 02, 2010 ...

Sat, 30 Jan 2010 23:42:36 GMT

Source: www.advancedphysics.org --- Saturday, January 30, 2010
For details, I posted a pdf at http://www.scribd.com/doc/26127683/Jackson-35 To sum up, on pg. 35, Section 1.7 - Poisson and Laplace Equations, of Jackson's Classical Electrodynamics, 3rd Edition, the author allegedly expresses the charge density rho(x',y',z') as a Taylor series around (x',y',z') = (x,y,z). He writes rho(x',y',z') = rho(x,y,z) + (r^2/6)*nabla^2 rho + ... How'd he get this? It doesn't seem to follow from the vector form of Taylor series for a 3-variable function. He follows this by an equation which contains the "big-oh" expression O(a^2, (a^2)*log a) This equation was allegedly obtained by "direct integration". How? And what does the above big-oh expression mean? ...

Sat, 30 Jan 2010 11:36:53 GMT

Source: front.math.ucdavis.edu --- Saturday, January 30, 2010
The group analysis of the generalized axion Electrodynamics with arbitrary self interaction of axionic field is presented. An extended class of exact solutions of equations of axionic Electrodynamics is found. ...

Fri, 29 Jan 2010 04:00:00 GMT

Source: pra.aps.org --- Thursday, January 28, 2010
In this Brief Report, we propose a potential scheme to implement one-way quantum computation with circuit quantum Electrodynamics (QED). Large cluster states of charge qubits can be generated in just one step with a superconducting transmission line resonator (TLR) playing the role of a dispersive c... ...

Tue, 26 Jan 2010 23:13:29 GMT

Source: www.classicalvalues.com --- Tuesday, January 26, 2010
I have just sent this out to a group of physicists and scientists to see if it has any merit. Here is the cover letter I sent: George Miley of U Illinois, Champaign is involved. I am passing this... ...

Tue, 26 Jan 2010 07:49:59 GMT

Source: isohunt.com --- Tuesday, January 26, 2010
Bit Torrent details: Category: Audio Original site: http://thepiratebay.org/ Size: 253.031 MB, in 17 files Seeds: 11   |   Leechers: 13   |   Downloads: 10 Torrent downloaded from http://thepiratebay.org ...

Mon, 25 Jan 2010 12:12:24 GMT

Source: isohunt.com --- Monday, January 25, 2010
Bit Torrent details: Category: Audio Original site: http://h33t.com/ Size: 253.031 MB, in 17 files Seeds: 1   |   Leechers: 18   |   Downloads: 4 N/A ...

Fri, 08 Jan 2010 13:14:25 GMT

Source: front.math.ucdavis.edu --- Friday, January 08, 2010
The electromagnetic fields in Maxwell's theory satisfy linear equations in the classical vacuum. This is modified in classical non-linear electrodynamic theories. To date there has been little experimental evidence that any of these modified theories are tenable. However with the advent of high-intensity lasers and powerful laboratory magnetic fields this situation may be changing. We argue that an approach involving the self-consistent relativistic motion of a smooth fluid-like distribution of matter (composed of a large number of charged or neutral particles) in an electromagnetic field offers a viable theoretical framework in which to explore the experimental consequences of non-linear Electrodynamics. We construct such a model based on the theory of Born and Infeld and suggest that a simple laboratory experiment involving the propagation of light in a static magnetic field could be used to place bounds on the fundamental coupling in that theory. Such a framework has many applications including a new description of the motion of particles in modern accelerators and plasmas as well as phenomena in astrophysical contexts such as in the environment of magnetars, quasars and gamma-ray bursts. ...

Fri, 08 Jan 2010 12:16:19 GMT

Source: softarchive.net --- Friday, January 08, 2010
Publisher: Springer | ISBN: 038794799X | edition 1998 | PDF | 556 pages | 19,8 mb The series of texts on Classical Theoretical Physics is based on the highly successful series of courses given by Walter Greiner at the Johann Wolfgang Goethe University in Frankfurt am Main, Germany. Intended for advanced undergraduates and beginning graduate students, the volumes in the series provide not only a complete survey of classical theoretical physics but also an enormous number of worked examples and probles to show students clearly how to apply the abstract principles to realistic problems. This volume covers: Electrostatics > fundamental concepts, fields, potentials, delta function > Gauss's law, fields from various configurations, electrostatic energies > Green's theorems, uniqueness of solutions ...

Fri, 08 Jan 2010 04:00:00 GMT

Source: prd.aps.org --- Thursday, January 07, 2010
Author(s): Michael E. Tobar, Eugene N. Ivanov, Paul L. Stanwix, Jean-Michel G. le Floch, and John G. Hartnett [Phys. Rev. D 81, 029902] Published Fri Jan 08, 2010 ...

Wed, 06 Jan 2010 10:21:45 GMT

Source: softarchive.net --- Wednesday, January 06, 2010
Publisher: Springer | ISBN: 3540675205 | edition 2000 | PDF | 152 pages | 8,4 mb Recent advances in semiconductor technology have made it possible to fabricate microcavity structures in which both photon fields and electron-hole pairs (or excitons) are confined in a small volume comparable to their wavelength. The radiative properties of the electron-hole pairs and excitons are modified owing to the drastic change in the structure of the electromagnetic-field modes. This book is the first to give a comprehensive account of the theory of semiconductor cavity quantum Electrodynamics for such systems in the weak-coupling and strong-coupling regimes. The important concepts are presented, together with relevant, recent experimental results. ...

Tue, 05 Jan 2010 21:00:48 GMT

Source: sci.tech-archive.net --- Tuesday, January 05, 2010
Summary: standard analysis of relativistic classical field theory ... energy-momentum tensor and lose Electrodynamics spin. ... to an Electrodynamics spin tensor after some symmetrization in the ... ...

Sun, 03 Jan 2010 07:00:39 GMT

Source: www.ebooksforge.com --- Sunday, January 03, 2010
Title: Electrodynamics Author: Ingemar Bengtsson Publisher: Stockholms universitet, Fysikum 2002 Number of page: 97 Description: These are Electrodynamics lecture notes for undergraduates. Topics covered are: special relativity, particles in external fields, magnetohydrodynamics, Maxwell’s equations, radiation from moving charges, radiation damping. Author Links Download or Read Book here Share this on Facebook Tweet This! Post this to MySpace Share this on del.icio.us Share this on [...] ...

Sun, 03 Jan 2010 02:36:56 GMT

Source: www.advancedphysics.org --- Saturday, January 02, 2010
I find the usual formalism of QED very ad hoc, opaque and hard to follow - and one particular thing has been bugging me for quite some time. Consider the following 3 QED processes: 1. Coulomb scattering of an electron or a positron from a heavy nucleus 2. Bremsstrahlung radiation during Coulomb scattering 3. Thomson/Compton scattering Classically, several things, which could easily be shown in Jackson-level classical Electrodynamics, seem intuitively obvious: 1. The differential cross-section is modified if an electron moves relativistically when near the nucleus, even if it has VERY low energy far away (say, 10 eV). This would not happen for positrons. 2. Electrons emit far more bremsstrahlung at low energy than positrons because (classically speaking) their acceleration is more violent as they pass near the nucleus. Also, relativistic effects can modify the bremsstrahlung for electrons in this case, even if the energy far away is very low, while this does not happen for positrons. 3. In Thomson scattering, the cross-section is modified if the e.m. radiation is of such a high intensity that the electron oscillates at a relativistic speed during the scattering process. Presumably, the cross-section for Compton scattering should also be modified if the "classical oscillation velocity" of the electron is relativistic. All of these effects, which make so much sense classically, have been confirmed by experiment. And yet it is far from obviou ...