Finite Size Effects on the QCD Spectrum Revisited

Abstract

We have continued our study of finite size effects in the QCD spectrum on lattices ranging in size from $8^3\times 24$ to $16^3\times 24$. We have increased our statistics for quark mass $a{m}_q=0.025$ for the smallest lattice size. In addition, we have studied quark mass 0.0125 for lattice sizes $12^3\times 24$ and $16^3\times 24$. These lattice sizes correspond to a box 1.8--3.6 fm on a side when the rho mass at zero quark mass is used to set the scale. We discuss the nucleon to rho mass ratio at a smaller value of $m_{\pi }/m_{\rho }$ than previously studied with two dynamical flavors.

Comments: talk at Lattice '92, Amsterdam, 4 pages, 4 figures (included as PostScript files), requires espcrc2.sty, Preprint IUHET--233