Gauge Invariance and Effective Actions in D=3 at Finite Temperature

Details Gauge Invariance and Effective Actions in D=3 at Finite Temperature Gauge Invariance and Effective Actions in D=3 at Finite Temperature

1997-09-04

arxiv.org/abs/hep-th/9709035v1

Phys.Rev. D57 (1998) 1171-1177

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, Revtex

Scientific paper

10.1103/PhysRevD.57.1171

For background gauge field configurations reducible to the form Amu = (A3, A(x)) where A3 is a constant, we provide an elementary derivation of the recently obtained result for the exact induced Chern-Simons (CS) effective action in QED3 at finite temperature. The method allows us to extend the result in several useful ways: to obtain the analogous result for the `mixed' CS term in the Dorey-Mavromatos model of parity-conserving planar superconductivity, thereby justifying their argument for flux quantization in the model; to the induced CS term for a tau-dependent flux; and to the term of second order in A(x) (and all orders in A3) in the effective action.

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