Scaling tests of the improved Kogut-Susskind quark action

The MILC collaboration; Bernard, C.; Burch, T.; DeGrand, T. A.; DeTar, C. E.; Gottlieb, S.; Heller, U. M.; Hetrick, J.; Orginos, K.; Sugar, R. L.; Toussaint, D.

Scaling tests of the improved Kogut-Susskind quark action

Authors

The MILC collaboration

Description

Improved lattice actions for Kogut-Susskind quarks have been shown to improve rotational symmetry and flavor symmetry. In this work we find improved scaling behavior of the rho and nucleon masses expressed in units of a length scale obtained from the static quark potential, and better behavior of the Dirac operator in instanton backgrounds.
4 pages, 4 figures, Revtex