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In Rindler's model of a uniformly accelerated reference frame we analyze the apparent shape of rods and marked light rays for the case that the observers as well as the rods and the sources of light are at rest with respect to the Rindler…

General Relativity and Quantum Cosmology · Physics 2014-11-18 E. Birsin , W. Hasse

We address the old question of whether or not a uniformly accelerated charged particle radiates, and consequently, if weak equivalence principle is violated by electrodynamics. We show that radiation has different meanings; some absolute,…

General Relativity and Quantum Cosmology · Physics 2007-05-23 A. Shariati , M. Khorrami

Electromagnetic quantities at a spacetime point have tensor Lorentz transformations between relatively-moving inertial frames. However, since the Lorentz transformation of time between inertial frames depends upon both the time and space…

Classical Physics · Physics 2024-09-10 Timothy H. Boyer

Moving particles outside a star will generally experience quantum friction caused by the Unruh radiation reaction. There exist however radial trajectories that lack this effect (in the outgoing radiation sector, and ignoring…

General Relativity and Quantum Cosmology · Physics 2015-11-10 Luis C. Barbado , Carlos Barceló , Luis J. Garay

Nothing can physically travel faster than light in vacuum. This is why it has been considered that there is no \v{C}erenkov radiation (\v{C}R) without an effective refractive index due to some background field. In this Letter, we…

Optics · Physics 2022-10-31 Daigo Oue , Kun Ding , J. B. Pendry

The fact that the formula used by Hannay in his Comment is "from a standard text on electrodynamics" neither warrants that it is universally applicable, nor that it is unequivocally correct. We have explicitly shown [J. Opt. Soc. Am. A 25,…

The energy of a particle moving on a spacetime, in principle, can affect the background metric. The modifications to it depend on the ratio of energy of the particle and the Planck energy, known as rainbow gravity. Here we find the explicit…

General Relativity and Quantum Cosmology · Physics 2017-12-06 Gaurav Yadav , Baby Komal , Bibhas Ranjan Majhi

Spacetime boundaries with canonical Neuman or Dirichlet conditions preserve conformal invarience, but "mixed" boundary conditions which interpolate linearly between them can break conformal symmetry and generate interesting Renormalization…

High Energy Physics - Theory · Physics 2021-01-13 Andrew Loveridge

Quantum radiated energy flux emitted by an Unruh-DeWitt (UD) detector, with the internal harmonic oscillator coupled to a massless scalar field, in linear oscillatory motion in (3+1) dimensional Minkowski space is studied by numerical…

High Energy Physics - Theory · Physics 2016-01-27 Shih-Yuin Lin

I analyse and numerically evaluate the radiation field generated by an experimentally realized embodiment of an electric polarization current whose rotating distribution pattern moves with linear speeds exceeding the speed of light in…

High Energy Astrophysical Phenomena · Physics 2019-07-26 Houshang Ardavan

We show that Abrikosov vortices moving towards the surface of a superconductor emit electromagnetic radiation into free space. The frequency distribution of the radiated intensity displays a pronounced maximum at microwave frequencies…

Superconductivity · Physics 2007-05-23 O. V. Dolgov , N. Schopohl

Radiation generated by a charge moving through a vacuum channel in a dielectric cone is analyzed. It is assumed that the charge moves through the cone from the apex side to the base side (the case of "inverted" cone). The cone size is…

Accelerator Physics · Physics 2020-11-25 Andrey V. Tyukhtin , Sergey N. Galyamin , Viktor V. Vorobev , Aleksandra A. Grigoreva

The force of electromagnetic radiation on a dielectric medium may be derived by a direct application of the Lorentz law of classical electrodynamics. While the light's electric field acts upon the (induced) bound charges in the medium, its…

Optics · Physics 2014-01-29 Masud Mansuripur , Armis R. Zakharian , Jerome V. Moloney

We investigate how a uniformly rotating frame is defined as the rest frame of an observer rotating with constant angular velocity $\Omega$ around the $z$ axis of an inertial frame. Assuming that this frame is a Lorentz one, we second…

High Energy Physics - Theory · Physics 2008-11-26 V. A. De Lorenci , N. F. Svaiter

By using the 3+1 point of view and parametrized Minkowski theories we develop the theory of {\it non-inertial} frames in Minkowski space-time. The transition from a non-inertial frame to another one is a gauge transformation connecting the…

General Relativity and Quantum Cosmology · Physics 2010-03-26 David Alba , Luca Lusanna

Emission of electromagnetic radiation by accelerated particles with electric, toroidal and anapole dipole moments is analyzed. It is shown that ellipticity of the emitted light can be used to differentiate between electric and toroidal…

Classical Physics · Physics 2018-06-20 V. Savinov

Using the formulation of electrodynamics in rotating media, we put into explicit quantitative form the effect of rotation on interference and diffraction patterns as observed in the rotating medium's rest-frame. As a paradigm experiment we…

Optics · Physics 2019-12-18 Yarden Mazor , Ben Z. Steinberg

The Minkowski vacuum in an accelerated frame behaves like a fluid that has not only a finite temperature due to the Unruh effect, but also a finite shear viscosity. Moreover, the ratio of this viscosity to the entropy density exactly…

High Energy Physics - Theory · Physics 2025-02-26 Dmitry D. Lapygin , Georgy Yu. Prokhorov , Oleg V. Teryaev , Valentin I. Zakharov

We investigate the quantum radiation produced by an Unruh-De Witt detector in a uniformly accelerating motion coupled to the vacuum fluctuations. Quantum radiation is nonvanishing, which is consistent with the previous calculation by Lin…

High Energy Physics - Theory · Physics 2017-01-25 Satoshi Iso , Naritaka Oshita , Rumi Tatsukawa , Kazuhiro Yamamoto , Sen Zhang

We present arguments in favor of the proposition that the momentum of light inside a transparent dielectric medium is the arithmetic average of the Minkowski and Abraham momenta. Using the Lorentz transformation of the fields (and of the…

Optics · Physics 2012-07-27 Masud Mansuripur