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APS » Journals » Phys. Rev. D » Volume 61 » Issue 11
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Phys. Rev. D 61, 111502(R) (2000) [4 pages]

Scaling tests of the improved Kogut-Susskind quark action

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Claude Bernard1, Tom Burch2, Thomas A. DeGrand3, Carleton DeTar4, Steven Gottlieb5, Urs M. Heller6, James E. Hetrick7, Kostas Orginos2, Bob Sugar8, and Doug Toussaint2
1Department of Physics, Washington University, St. Louis, Missouri 63130
2Department of Physics, University of Arizona, Tucson, Arizona 85721
3Physics Department, University of Colorado, Boulder, Colorado 80309
4Physics Department, University of Utah, Salt Lake City, Utah 84112
5Department of Physics, Indiana University, Bloomington, Indiana 47405
6SCRI, Florida State University, Tallahassee, Florida 32306-4130
7Department of Physics, University of the Pacific, Stockton, California 95211-0197
8Department of Physics, University of California, Santa Barbara, California 93106

Received 15 December 1999; published 26 April 2000

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 ρ 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.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.61.111502
DOI:
10.1103/PhysRevD.61.111502
PACS:
12.38.Gc, 11.15.Ha
 
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