1997/05/21 by Robert D. Mawhinney
Physics and Astronomy · #hep-lat
published as RHIC Summer Study '96, edited by D.E.Kahana and Y. Pang, BNL-52514 · 15 pages, 6 figures. Presented at RHIC Summer Study '96
arxiv created 1997/05/21 · arxiv updated 2009/12/01
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.