Improving flavor symmetry in the Kogut-Susskind hadron spectrum
- 1 February 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 55 (3), R1133-R1137
- https://doi.org/10.1103/physrevd.55.r1133
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.Keywords
This publication has 8 references indexed in Scilit:
- Perfect lattice action for asymptotically free theoriesNuclear Physics B, 1994
- Operator dependence of hadron masses for Kogut-Susskind quarks on the latticeNuclear Physics B, 1994
- Bethe-Salpeter amplitudes and density correlations for mesons with Wilson fermionsPhysical Review D, 1993
- Viability of lattice perturbation theoryPhysical Review D, 1993
- Glueball masses and string tension in lattice QCDPhysics Letters B, 1987
- Hadron mass calculations using susskind fermions at β = 5.7 and 6.0Nuclear Physics B, 1987
- Improved continuum limit lattice action for QCD with wilson fermionsNuclear Physics B, 1985
- Computation of the action for on-shell improved lattice gauge theories at weak couplingPhysics Letters B, 1985