Cosmological background torsion inhomogeneities and Lorentz violation in QED

Details Cosmological background torsion inhomogeneities and Lorentz violation in QED Cosmological background torsion inhomogeneities and Lorentz violation in QED

2003-01-27

arxiv.org/abs/hep-th/0301210v1

Physics

High Energy Physics

High Energy Physics - Theory

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Scientific paper

A non-minimal photon-torsion axial coupling in the quantum electrodynamics (QED) framework is considered. The geometrical optics in Riemann-Cartan spacetime is considering and a plane wave expansion of the electromagnetic vector potential is considered leading to a set of the equations for the ray congruence. Since we are interested mainly on the torsion effects in this first report we just consider the Riemann-flat case composed of the Minkowskian spacetime with torsion. It is also shown that in torsionic de Sitter background the vacuum polarisation does alter the propagation of individual photons, an effect which is absent in Riemannian spaces. It is shown that the cosmological torsion background inhomogeneities induce Lorentz violation and massive photon modes in this QED.

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