Improving flavor symmetry in the Kogut-Susskind hadron spectrum

Tom Blum; Carleton DeTar; Steven Gottlieb; Kari Rummukainen; Urs M. Heller; James E. Hetrick; Doug Toussaint; R. L. Sugar; Matthew Wingate

doi:10.1103/PhysRevD.55.R1133

Improving flavor symmetry in the Kogut-Susskind hadron spectrum

Tom Blum, Carleton DeTar, Steven Gottlieb, Kari Rummukainen, Urs M. Heller, James E. Hetrick, Doug Toussaint, R. L. Sugar, Matthew Wingate

Physics

Research output: Contribution to journal › Article › peer-review

130 Scopus citations

Abstract

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 2 by this modification.

Original language	English (US)
Pages (from-to)	R1133-R1137
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	55
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.55.R1133
State	Published - 1997

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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Improving flavor symmetry in the Kogut-Susskind hadron spectrum. / Blum, Tom; DeTar, Carleton; Gottlieb, Steven; Rummukainen, Kari; Heller, Urs M.; Hetrick, James E.; Toussaint, Doug; Sugar, R. L.; Wingate, Matthew.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 55, No. 3, 1997, p. R1133-R1137.

Research output: Contribution to journal › Article › peer-review

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