Speed of light in non-trivial vacua

Latorre, José I.; Pascual, P.; Tarrach, R.

doi:10.1016/0550-3213(94)00490-6

Cited by 122 publications

(161 citation statements)

References 24 publications

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“…In this context, Drummond & Hathrell (1980) showed the possibility of superluminal velocities in certain spacetime configurations. Other interesting cases can be found in Novello et al (1989); Daniels & Shore (1994), Latorre et al (1995) and Shore (1996).…”

Section: Introductionmentioning

confidence: 99%

Dyadosphere bending of light

Lorenci

Figueiredo

Fliche

et al. 2001

A&A

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Section: Introductionmentioning

confidence: 99%

Dyadosphere bending of light

Lorenci

Figueiredo

Fliche

et al. 2001

A&A

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“…It is worth mentioning that the previous results are applicable to any static and spherically symmetric background. We will now consider two particular examples, the Schwarzschild background and the Reissner-Nordström background 7 . The Schwarzschild spacetime is described by the metric…”

Section: B Static and Spherically Symmetric Backgroundsmentioning

confidence: 99%

“…Physically, the effect can be understood as follows: the photon exists for part of the time as a virtual e − e + pair, on which the external conditions do act and modify the propagation. In previous works the problem of photon propagation in modified QED vacua has been analyzed for external electromagnetic (EM) fields [1,2], boundary conditions [3,4], external gravitational fields [5,6], and finite temperature [7]. Further references and details can be found in Ref.…”

Section: Introductionmentioning

confidence: 99%

One-loop graviton corrections to Maxwell’s equations

Dalvit

Mazzitelli²,

Molina-Parı́s³

2001

Phys. Rev. D

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We compute the graviton induced corrections to Maxwell's equations in the one-loop and weak field approximations. The corrected equations are analogous to the classical equations in anisotropic and inhomogeneous media. We analyze in particular the corrections to the dispersion relations. When the wavelength of the electromagnetic field is much smaller than a typical length scale of the graviton two-point function, the speed of light depends on the direction of propagation and on the polarisation of the radiation. In the opposite case, the speed of light may also depend on the energy of the electromagnetic radiation. We study in detail wave propagation in two special backgrounds, flat Robertson-Walker and static, spherically symmetric spacetimes. In the case of a flat Robertson-Walker gravitational background we find that the corrected electromagnetic field equations correspond to an isotropic medium with a time-dependent effective refractive index. For a static, spherically symmetric background the graviton fluctuations induce a vacuum structure which causes birefringence in the propagation of light. PACS number(s): 04.60.-m, 11.15.Kc.

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“…This is because the existence of such space seriously contradicts quantum-mechanical laws. According to the latter, the genuine (physical) vacuum must be a non-trivial quantum medium which acts as a non-removable background and affects particles propagating through [1,45].…”

Section: Physical Vacuummentioning

confidence: 99%

Singularity-free model of electric charge in physical vacuum: non-zero spatial extent and mass generation

Dzhunushaliev¹,

Zloshchastiev

2013

Open Physics

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Abstract:We propose a model of a spinless electrical charge as a self-consistent field configuration of the electromagnetic (EM) field interacting with a physical vacuum effectively described by the logarithmic quantum Bose liquid. We show that, in contrast to the EM field propagating in a trivial vacuum, a regular solution does exist, and both its mass and spatial extent emerge naturally from dynamics. It is demonstrated that the charge and energy density distribution acquire Gaussian-like form. The solution in the logarithmic model is stable and energetically favourable, unlike that obtained in a model with a quartic (Higgs-like) potential.

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Speed of light in non-trivial vacua

Cited by 122 publications

References 24 publications

Dyadosphere bending of light

Dyadosphere bending of light

One-loop graviton corrections to Maxwell’s equations

Singularity-free model of electric charge in physical vacuum: non-zero spatial extent and mass generation

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