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arXiv · 1201.2649

Universality and ambiguity in fermionic effective actions

Guilherme de Berredo-Peixoto·Dante D. Pereira·Ilya L. Shapiro
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Abstract

We discuss an ambiguity in the one-loop effective action of massive fields which takes place in massive fermionic theories. The universality of logarithmic UV divergences in different space-time dimensions leads to the non-universality of the finite part of effective action, which can be called the non-local multiplicative anomaly. The general criteria of existence of this phenomena are formulated and applied to fermionic operators with different external fields.

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Guilherme de Berredo-Peixoto, Dante D. Pereira, Ilya L. Shapiro. 2012-01-12. Universality and ambiguity in fermionic effective actions. https://doi.org/10.1103/physrevd.85.064025

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