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Anomalies, boundaries and the in-in formalism

Lookup NU author(s): Professor Ian MossORCiD

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Abstract

In the context of quantum field theory, an anomaly exists when a theory has a classical symmetry which is not a symmetry of the quantum theory. This short exposition aims at introducing a new point of view, which is that the proper setting for anomaly calculations is the 'in-in', or closed-time path formulation of quantum field theory. There are also some new results for anomalies in the context of boundary value problems, and a new correction to the a(5) heat-kernel coefficient. This article is part of a special issue of Journal of Physics A: Mathematical and Theoretical in honour of Stuart Dowker's 75th birthday devoted to 'Applications of zeta functions and other spectral functions in mathematics and physics'.

Publication metadata

Author(s): Moss IG

Publication type: Article

Publication status: Published

Journal: Journal of Physics A: Mathematical and Theoretical

Year: 2012

Volume: 45

Issue: 37

Print publication date: 04/09/2012

Date deposited: 16/11/2012

ISSN (print): 1751-8113

ISSN (electronic): 1751-8121

Publisher: Institute of Physics Publishing Ltd.

URL: http://dx.doi.org/10.1088/1751-8113/45/37/374022

DOI: 10.1088/1751-8113/45/37/374022

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