CHIRAL SYMMETRY AND $U_A(1)$ ANOMALY IN AN EFFECTIVE THEORY OF QCD

Details CHIRAL SYMMETRY AND $U_A(1)$ ANOMALY IN AN EFFECTIVE THEORY OF QCD CHIRAL SYMMETRY AND $U_A(1)$ ANOMALY IN AN EFFECTIVE THEORY OF QCD

1995-04-11

arxiv.org/abs/hep-ph/9504289v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, LATEX(macros are included). Invited talk presented at Int. RCNP Workshop on Color Confinement and Hadrons, March 22 -

Scientific paper

We show on the basis of an effective theory of QCD that a wide variety of observables in the hadron world is governed by the chiral symmetry together with an interplay between the axial anomaly and the explicit symmetry breaking due to the current quark mass. We also discuss the nature of the chiral transition at finite temperature and related dynamical phenomena using the effective Lagrangian. Some phenomenological implications of the small vector coupling (``vector limit'') at high temperatures are suggested.

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