Testing improved actions for dynamical Kogut-Susskind quarks

Details Testing improved actions for dynamical Kogut-Susskind quarks Testing improved actions for dynamical Kogut-Susskind quarks

1998-05-11

arxiv.org/abs/hep-lat/9805009v1

Phys.Rev.D59:014501,1999

Physics

High Energy Physics

High Energy Physics - Lattice

16 pages, LaTeX, PostScript figures included

Scientific paper

10.1103/PhysRevD.59.014501

We extend tests of "Naik" and "fat link" improvements of the Kogut-Susskind quark action to full QCD simulations, and verify that the improvements previously demonstrated in the quenched approximation apply also to dynamical quark simulations. We extend the study of flavor symmetry improvement to the complete set of pions, and find that the nonlocal pions are significantly heavier than the local non-Goldstone pion. These results can be used to estimate the lattice spacing necessary for realistic simulations with this action.

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