Gauge Invariance, Finite Temperature and Parity Anomaly in D=3

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dc.creatorDeser, S.
dc.creatorGriguolo, L.
dc.creatorSeminara, D.
dc.date1997-05-08
dc.date.accessioned2026-07-07T11:48:11Z
dc.date.available2026-07-07T11:48:11Z
dc.descriptionThe effective gauge field actions generated by charged fermions in $QED_3$ and $QCD_3$ can be made invariant under both small and large gauge transformations at any temperature by suitable regularization of the Dirac operator determinant, at the price of parity anomalies. We resolve the paradox that the perturbative expansion is not invariant, as manifested by the temperature dependence of the induced Chern-Simons term, by showing that large (unlike small) transformations and hence their Ward identities, are not perturbative order-preserving. Our results are illustrated through concrete examples of field configurations.
dc.description4 pages, RevTex
dc.identifierhttps://arxiv.org/abs/hep-th/9705052
dc.identifierhttp://arxiv.org/abs/hep-th/9705052
dc.identifierPhys.Rev.Lett.79:1976-1979,1997
dc.identifierdoi:10.1103/PhysRevLett.79.1976
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202831
dc.subjectHigh Energy Physics - Theory
dc.subjectSuperconductivity
dc.titleGauge Invariance, Finite Temperature and Parity Anomaly in D=3
dc.typetext

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