Improving flavor symmetry in the Kogut-Susskind hadron spectrum

Details Improving flavor symmetry in the Kogut-Susskind hadron spectrum Improving flavor symmetry in the Kogut-Susskind hadron spectrum

1996-09-19

arxiv.org/abs/hep-lat/9609036v1

Phys.Rev.D55:1133-1137,1997

Physics

High Energy Physics

High Energy Physics - Lattice

9 pages, 1 figure, uses epsf.sty

Scientific paper

10.1103/PhysRevD.55.1133

We study the effect of modifying the coupling of Kogut-Susskind quarks to the
gauge field by replacing the link matrix in the quark action by a "fat link",
or sum of link plus three-link paths. Flavor symmetry breaking, determined by
the mass difference between the Goldstone and non-Goldstone local pions, is
reduced by approximately a factor of two by this modification.

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