Chiral Extension of Lattice Gauge Theory

Details Chiral Extension of Lattice Gauge Theory Chiral Extension of Lattice Gauge Theory

2004-09-18

arxiv.org/abs/hep-lat/0409120v1

Nucl.Phys.Proc.Suppl. 129 (2004) 901-903

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2003 3 pages, 1 figure

Scientific paper

10.1016/S0920-5632(03)02748-8

Two approaches are presented to coupling explicit Goldstone modes to $N_f$ flavors of massless quarks preserving exact $SU(N_f) \times SU(N_f)$ chiral symmetry on the lattice. The first approach is a generalization a chiral extension to QCD (aka XQCD) proposed by Brower, Shen and Tan consistent with the Ginsparg-Wilson relation. The second approach based on the Callan,Coleman, Wess and Zumino coset construction has a real determinant atzero quark axial coupling, $g_A = 0$.

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