Journal
NUCLEAR PHYSICS B
Volume 793, Issue 3, Pages 425-450Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysb.2007.10.005
Keywords
effective action; chiral models; worldline path integral
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We present a formalism to determine the imaginary part of a general chiral model in the derivative expansion. Our formalism is based on the worldline path integral for the covariant current that can be given in an explicit chiral and gauge covariant form. The effective action is then obtained by integrating the covariant current, taking account of the anomaly. (c) 2007 Published by Elsevier B.V.
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