Variants of fattening and flavor symmetry restoration

Kostas Orginos, William D Toussaint, R. L. Sugar

Research output: Contribution to journalArticle

332 Citations (Scopus)

Abstract

We study the effects of different "fat link" actions for Kogut-Susskind quarks on flavor symmetry breaking. Our method is mostly empirical - 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 "link plus staple" 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.

Original languageEnglish (US)
Pages (from-to)1-8
Number of pages8
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume60
Issue number5
StatePublished - Sep 1 1999

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Restoration
restoration
quarks
Quarks
Symmetry
fats
symmetry
broken symmetry
Symmetry Breaking
valence
pions
costs
Costs
simulation
Simulation

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Variants of fattening and flavor symmetry restoration. / Orginos, Kostas; Toussaint, William D; Sugar, R. L.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 60, No. 5, 01.09.1999, p. 1-8.

Research output: Contribution to journalArticle

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