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 | |
| State | Published - Jan 1 1997 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)
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Blum, T., DeTar, C., Gottlieb, S., Rummukainen, K., Heller, U. M., Hetrick, J. E., Toussaint, D., Sugar, R. L., & Wingate, M. (1997). Improving flavor symmetry in the Kogut-Susskind hadron spectrum. Physical Review D - Particles, Fields, Gravitation and Cosmology, 55(3), R1133-R1137. https://doi.org/10.1103/PhysRevD.55.R1133