期刊
NUCLEAR PHYSICS B
卷 793, 期 3, 页码 425-450出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nuclphysb.2007.10.005
关键词
effective action; chiral models; worldline path integral
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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