Effective Couplings of Dynamical Nambu-Goldstone Bosons with Elementary Fermions
T. Matsuki (Tokyo Kasei U.), M. Shiotani (Kobe U.)
TL;DR
This paper develops a method to construct an effective action for Nambu-Goldstone bosons and elementary fermions in gauge theories with spontaneous chiral symmetry breaking, enabling calculation of physical quantities.
Contribution
It introduces a novel approach using auxiliary fields to derive the effective action in theories where particles are composed of elementary fermions.
Findings
Derived effective action for Nambu-Goldstone bosons and fermions
Calculated decay constants and other physical quantities
Provided a framework for analyzing dynamical symmetry breaking
Abstract
Assuming dynamical spontaneous breakdown of chiral symmetry for massless gauge theory without scalar fields, we find a method how to construct an effective action of the dynamical Nambu-Goldstone bosons and elemetary fermions by using auxiliary fields. Here dynamical particles are asssumed to be composed of elementary fermions. Various quantities including decay constants are calculated from this effective action.
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