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Title: Variants of fattening and flavor symmetry restoration

Abstract

We study the effects of different {open_quotes}fat link{close_quotes} actions for Kogut-Susskind quarks on flavor symmetry breaking. Our method is mostly empirical{emdash}we compute the pion spectrum with different valence quark actions on common sets of sample lattices. Different actions are compared, as best we can, at equivalent physical points. We find significant reductions in flavor symmetry breaking relative to the conventional or to the {open_quotes}link plus staple{close_quotes} actions, with a reasonable cost in computer time. We also develop and test a scheme for approximate unitarization of the fat links. While our tests have concentrated on the valence quark action, our results will be useful in designing simulations with dynamical quarks. thinsp {copyright} {ital 1999} {ital The American Physical Society}

Authors:
Publication Date:
OSTI Identifier:
362729
Resource Type:
Journal Article
Journal Name:
Physical Review, D
Additional Journal Information:
Journal Volume: 60; Journal Issue: 5; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; LATTICE FIELD THEORY; SYMMETRY BREAKING; FLAVOR MODEL; QUANTUM CHROMODYNAMICS; QUARKS; ACTION INTEGRAL

Citation Formats

The MILC Collaboration. Variants of fattening and flavor symmetry restoration. United States: N. p., 1999. Web.
The MILC Collaboration. Variants of fattening and flavor symmetry restoration. United States.
The MILC Collaboration. Wed . "Variants of fattening and flavor symmetry restoration". United States.
@article{osti_362729,
title = {Variants of fattening and flavor symmetry restoration},
author = {The MILC Collaboration},
abstractNote = {We study the effects of different {open_quotes}fat link{close_quotes} actions for Kogut-Susskind quarks on flavor symmetry breaking. Our method is mostly empirical{emdash}we compute the pion spectrum with different valence quark actions on common sets of sample lattices. Different actions are compared, as best we can, at equivalent physical points. We find significant reductions in flavor symmetry breaking relative to the conventional or to the {open_quotes}link plus staple{close_quotes} actions, with a reasonable cost in computer time. We also develop and test a scheme for approximate unitarization of the fat links. While our tests have concentrated on the valence quark action, our results will be useful in designing simulations with dynamical quarks. thinsp {copyright} {ital 1999} {ital The American Physical Society}},
doi = {},
journal = {Physical Review, D},
number = 5,
volume = 60,
place = {United States},
year = {1999},
month = {9}
}