Anomalous amplitudes in a thermal bath
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I review the implications of the axial anomaly in a thermal bath. I assume that the Adler-Bardeen theorem applies at nonzero temperature, so that the divergence of the axial current remains is independent of temperature. Nevertheless, I argue that while the anomaly doesn't change with temperature, ``anomalous'' mesonic couplings do. This is verified by explicit calculations in a low temperature expansion, and near the chiral phase transition.
11 pages, PTPTeX, to appear in the Proceedings of YKIS '97
11 pages, PTPTeX, to appear in the Proceedings of YKIS '97