Quark loop effects with an improved staggered fermion action

C. Bernard, T. Burch, T. A. DeGrand, C. E. DeTar, Steven Gottlieb, U. M. Heller, K. Orginos, R. L. Sugar, D. Toussaint

Research output: Contribution to journalArticlepeer-review


We have been studying effects of dynamical quarks on various hadronic observables, using our recently formulated improvement for staggered fermions. To illustrate improvement, we show that the light hadron spectrum in the quenched approximation gives remarkably good scaling. We highlight three new results: (1) We find no apparent quark loop effects in the Edinburgh plot with 2+1 flavors of dynamical quarks at a = 0.14 fm. (2) We show that dynamical quarks modify the shape of the heavy quark potential. (3) We present results hinting at meson decay effects in light hadron spectroscopy.

Original languageEnglish (US)
Pages (from-to)237-241
Number of pages5
JournalNuclear Physics B - Proceedings Supplements
Issue number1-3
StatePublished - Mar 2001

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics


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