Scaling tests of the improved Kogut-Susskind quark action

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

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Scaling tests of the improved Kogut-Susskind quark action

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arxiv hep-lat/9912018 v1 pith:GM5F4T4W submitted 1999-12-13 hep-lat

The MILC collaboration: C. Bernard , T. Burch , T.A. DeGrand , C.E. DeTar , S. Gottlieb , U.M. Heller , J. Hetrick , K. Orginos

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R.L. Sugar D. Toussaint

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keywords improvedbehaviorkogut-susskindquarkscalingsymmetryactionactions

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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.

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