Topological susceptibility near Tc in SU(3) gauge theory

Abstract

We calculated the topological charge susceptibility χ t for pure gauge SU(3) theory at finite temperature. The anisotropic lattice and over-improved stout-link smoothing method were used to calculate the topological charge. Near the phase transition point we find a smooth crossover behavior for χ t with values decreasing from (189(2)MeV) 4 to (67(3)MeV) 4 as the temperature increased from 0.3T c to 1.9T c , which demonstrate that topological excitations exist far above T c . Our results are consistent with the earlier studies using other methods to calculate the topological charge on smaller lattice with narrower temperature range.