Quark Masses and Chiral Symmetry

Details Quark Masses and Chiral Symmetry Quark Masses and Chiral Symmetry

1995-05-18

arxiv.org/abs/hep-th/9505112v1

Phys.Rev. D52 (1995) 2951-2959

Physics

High Energy Physics

High Energy Physics - Theory

compressed postscript file, 20 pages with 10 figures. Also available at http://penguin.phy.bnl.gov/www/papers/BNL-61796.ps.Z

Scientific paper

10.1103/PhysRevD.52.2951

I discuss the global structure of the strongly interacting gauge theory of quarks and gluons as a function of the quark masses and the CP violating parameter $\theta$. I concentrate on whether a first order phase transition occurs at $\theta=\pi.$ I show why this is expected when multiple flavors have a small degenerate mass. This transition can be removed by sufficient flavor-breaking. I speculate on the implications of this structure for Wilson's lattice fermions.

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