Quenched KS light hadron mass at β=6.5 on a 64\times 48^3 lattice

Abstract

We report our quenched staggered light hadron mass calculation at the coupling of β= 6.5 on a 48^3 \times 64 lattice, based on an increased statistics of two hundred gauge configurations. Staggered quark wall sources with mass of m_q a = 0.01, 0.005, 0.0025 and 0.00125 are used. Flavor symmetry is restored for pion and ρmeson. The lattice scale is estimated to be a^{-1} = 3.7(2) GeV.

Figures (4)

• Figure 1: Nambu-Goldstone pion effective mass at $\beta = 6.5$ on $48^3 \times 64$ lattice for quark mass $m_q = 0.01$, 0.005, 0.0025 and 0.00125. Corner-wall source. The errors are estimated by Jack-knife method.
• Figure 2: Effective mass of pion calculated with 2000-sweep separation for quark mass $m_q = 0.01$. $\Diamond$ is the effective mass from the first 50, $+$ is from the second 50, $\Box$ is from the third 50, and $\times$ is from all 150.
• Figure 3: Effective mass of flavor symmetry partners at $\beta = 6.5$ on $48^3 \times 64$ lattice for quark mass $m_q = 0.01$: $N_1$ and $N_2$ (top), $\rho$ and $\rho_2$ (middle) and $\pi$ and $\pi_2$ (bottom). All show flavor symmetry restoration.
• Figure 4: Edinburgh plot at $\beta = 6.5$ on $48^3 \times 64$ lattice for quark mass $m_q = 0.01$, 0.005, 0.0025 and 0.00125. The two different fits are plotted for each quark mass value.