Phys. Rev. D 3, 1996–1998 (1971)Chiral-Invariant Perturbation TheoryReceived 19 October 1970; published in the issue dated 15 April 1971 Charap has found a particular system of pion coordinates leading to chiral-invariant amplitudes, if the usual Feynman rules are applied. It was shown that this system is determined by the condition det(gik)=1, where gik is the metric tensor of the pion space. In the general case the Feynman rules are modified by a counter-term that can be derived from an invariant measure in function space. The counterterm vanishes for g=1. © 1971 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.3.1996
DOI:
10.1103/PhysRevD.3.1996
PACS:
See AlsoOriginal Article: John M. Charap, Closed-Loop Calculations Using a Chiral-Invariant Lagrangian, Phys. Rev. D 2, 1554 (1970). |
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