Quark masses, chiral symmetry, and the U(1) anomaly

Details Quark masses, chiral symmetry, and the U(1) anomaly Quark masses, chiral symmetry, and the U(1) anomaly

1996-08-02

arxiv.org/abs/hep-ph/9608216v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 9 figures, uses sprocl.sty. Talk at conference "Quark confinement and the hadron spectrum," Como, June 1996

Scientific paper

I discuss the mass parameters appearing in the gauge theory of the strong interactions, concentrating on the two flavor case. I show how the effect of the CP violating parameter $\theta$ is simply interpreted in terms of the state of the {\ae}ther via an effective potential for meson fields. For degenerate flavors I show that a first order phase transition is expected at $\theta=\pi.$ I speculate on the implications of this structure for Wilson's lattice fermions.

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