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arXiv · 2204.02126

Impossibility of obtaining a CP-violating Euler-Heisenberg effective theory from a viable modification of QED

M. Ghasemkhani·V. Rahmanpour·R. Bufalo·A. Soto
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Abstract

In this paper, we examine the CP-violating term of the Euler-Heisenberg action. We focus in the aspects related with the generation of such a term from a QED-like model in terms of the effective action approach. In particular, we show that the generation of the CP-violating term is closely related with both of vector and axial fermionic bilinears. Although, these anomalous models are not a "viable" extension of QED, we argue that the CP-violating term in the photon sector is obtained only from this class of models, and not from any fundamental field theory.

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M. Ghasemkhani, V. Rahmanpour, R. Bufalo, A. Soto. 2022-04-05. Impossibility of obtaining a CP-violating Euler-Heisenberg effective theory from a viable modification of QED. https://doi.org/10.1140/epjc%2Fs10052-022-10351-8

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