Lorentz-violating Chern-Simons action under high temperature in massless QED

Details Lorentz-violating Chern-Simons action under high temperature in massless QED Lorentz-violating Chern-Simons action under high temperature in massless QED

2009-06-15

arxiv.org/abs/0906.2786v3

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, 1 figure, final version to appear in Phys. Lett. B

Scientific paper

Lorentz and CPT violating QED with massless fermions at finite temperature is studied. We show that there is no ambiguity in the induced coefficient of the Chern-Simons-like term that defines the so-called Carroll-Field-Jackiw model at high temperature. We also show that this system constitutes an example where the breaking of CPT and Lorentz symmetries is more severe at high temperature than in the zero temperature case thus precluding any naive expectations of Lorentz symmetry restoration.

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