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arXiv · hep-th/9712144

Finite Temperature Perturbation Theory and Large Gauge Invariance

Ashok Das·Gerald Dunne
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Abstract

We examine finite temperature perturbation theory for Chern-Simons theories, in the context of an analogue 0+1-dimensional model. In particular, we show how nonextensive terms arise in the perturbative finite temperature effective action, using both the real-time and imaginary-time formalisms. We illustrate how large gauge invariance is restored at all orders, despite being broken at any given order in perturbation theory. We discuss which aspects generalize to a perturbative analysis of finite temperature Chern-Simons terms in higher dimensions.

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Ashok Das, Gerald Dunne. 1997-12-19. Finite Temperature Perturbation Theory and Large Gauge Invariance. https://doi.org/10.1103/physrevd.57.5023

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