Lattice QCD with 0, 2 and 4 quark flavors

Details Lattice QCD with 0, 2 and 4 quark flavors Lattice QCD with 0, 2 and 4 quark flavors

1997-05-21

arxiv.org/abs/hep-lat/9705030v1

RHIC Summer Study '96, edited by D.E.Kahana and Y. Pang, BNL-52514

Physics

High Energy Physics

High Energy Physics - Lattice

15 pages, 6 figures. Presented at RHIC Summer Study '96

Scientific paper

We have done simulations of lattice QCD with different numbers of light dynamical quarks. Since we cannot reach the continuum limit with our current computers, we have done comparisons with 0 (quenched), 2 and 4 light quark flavors with the physical volume and lattice spacing constant, when these are determined from the mass of the rho. We find a 7% (2 standard deviation) difference in the nucleon to rho mass ratio for 2 and 4 quarks. More importantly, the effects of chiral symmetry breaking are dramatically decreased for the case of 4 light quarks.

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