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arXiv · hep-th/9507136

Gauge Invariance and Finite Temperature Effective Actions of Chern-Simons Gauge Theories with Fermions

Daniel Cabra·Eduardo Fradkin·Gerardo L. Rossini·Fidel A. Schaposnik
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Abstract

We discuss the behavior of theories of fermions coupled to Chern-Simons gauge fields with a non-abelian gauge group in three dimensions and at finite temperature. Using non-perturbative arguments and gauge invariance, and in contradiction with perturbative results, we show that the coefficient of the Chern-Simons term of the effective actions for the gauge fields at finite temperature can be {\it at most} an integer function of the temperature. This is in a sense a generalized no-renormalization theorem. We also discuss the case of abelian theories and give indications that a similar condition should hold there too. We discuss consequences of our results to the thermodynamics of anyon superfluids and fractional quantum Hall systems.

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Daniel Cabra, Eduardo Fradkin, Gerardo L. Rossini, Fidel A. Schaposnik. 1995-07-25. Gauge Invariance and Finite Temperature Effective Actions of Chern-Simons Gauge Theories with Fermions. https://doi.org/10.1016/0370-2693(96)00613-2

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