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Induced Parity-Breaking Term at Finite Temperature

1997; American Physical Society; Volume: 79; Issue: 11 Linguagem: Inglês

10.1103/physrevlett.79.1980

1092-0145

C. D. Fosco, G. L. Rossini, F Schaposnik,

Black Holes and Theoretical Physics

We compute the exact induced parity-breaking part of the effective action for $(2+1)$ massive fermions in ${\mathrm{QED}}_{3}$ at finite temperature by calculating the fermion determinant in a particular background. The result confirms that gauge invariance of the effective action is respected even when large gauge transformations are considered.