Testing improved actions for dynamical Kogut-Susskind quarks

Journal Article · Fri Jan 01 00:00:00 EST 1999 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.59.014501· OSTI ID:289050

Orginos, K ^[1]; Toussaint, D ^[1]

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1. Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States)

We extend tests of {open_quotes}Naik{close_quotes} and {open_quotes}fat link{close_quotes} improvements of the Kogut-Susskind quark action to full QCD simulations, and verify that the improvements previously demonstrated in the quenched approximation also apply 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. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 289050
• Journal Information: Physical Review, D, Vol. 59, Issue 1; Other Information: PBD: Jan 1999
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ACTION INTEGRAL
QUARKS
QUANTUM CHROMODYNAMICS
COMPUTERIZED SIMULATION
GOLDSTONE BOSONS
PIONS
GAUGE INVARIANCE
LATTICE FIELD THEORY