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arXiv · hep-lat/0409120

Chiral Extension of Lattice Gauge Theory

Richard C. Brower
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Abstract

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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Richard C. Brower. 2004-09-18. Chiral Extension of Lattice Gauge Theory. https://doi.org/10.1016/s0920-5632(03)02748-8

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