QED Second Order Corrections on the Speed of Light at Low Temperature

Por • 24 ago, 2013 • Sección: Crítica

H. Razmi, M. Zamani

Abstract: We want to study thermal corrections on the speed of light at low temperature considering temperature dependence of photon vacuum polarization tensor at two-loop level in the standard QED. It is found that the heat bath behaves as a dispersive medium to the propagation of light and reduces its speed proprtional to the second order of temperature. Similiraties and differences with already known calculations which are based on Euler-Heisenberg Lagrangian and/or those using temperature dependent electromagnetic properties of the medium are discussed.

arXiv:1308.4124v1 [hep-ph]

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