Lorentz-CPT violation, radiative corrections and finite temperature

Abstract

In this work we investigate the radiatively induced Chern-Simons-like terms in four-dimensions at zero and finite temperature. We use the approach of rationalizing the fermion propagator up to the leading order in the CPT-violating coupling $b_{\mu }$. In this approach, we have shown that although the coefficient of Chern-Simons term can be found unambiguously in different regularization schemes at zero or finite temperature, it remains undetermined. We observe a correspondence among results obtained at finite and zero temperature.

To appear in JHEP, 10 pages, 1 eps figure, minor changes and references added

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Cited by in corpus (9)

• Electrodynamics with Lorentz-violating operators of arbitrary dimension
• Mapping the Cosmological Expansion
• Lorentz violation and the proper-time method
• Finite Temperature behavior of the CPT-even and parity-even electrodynamics of the Standard Model Extension
• Classical solutions for the Carroll-Field-Jackiw-Proca electrodynamics
• On the ambiguities in the effective action in Lorentz-violating gravity
• Dynamical Lorentz and CPT symmetry breaking in a 4D four-fermion model
• Stationary solutions for the parity-even sector of the CPT-even and Lorentz-covariance-violating term of the standard model extension
• On the dual equivalence between self-dual and Maxwell-Chern-Simons models with Lorentz symmetry breaking