Finite temperature phase transition of two-flavor QCD with an improved Wilson quark action

Abstract

We study the phase structure of QCD at finite temperatures with two flavors of dynamical quarks on a lattice with the size $N_s^3\times N_t=16^3\times 4$, using a renormalization group improved gauge action and a clover improved Wilson quark action. The simulations are made along the lines of constant physics determined in terms of $m_{\mathrm{PS}}/m_{\mathrm{V}}$ at zero-temperature. We show preliminary results for the spatial string tension in the high temperature phase.

Comments: 7 pages, 7 figures, talk presented at Lattice 2006 (high temperature and density)