1303.0336 (Liang-Kai Wu et al.)

The nature of Roberge-Weiss transition end points in 2 flavor lattice
QCD with Wilson quarks    [PDF]

Liang-Kai Wu, Xiang-Fei Meng

We make simulations with 2 flavor Wilson fermions to investigate the nature of end points of Roberge-Weiss (RW) first order phase transition line. The simulations are carried out at 9 values of the hopping parameter $\kappa$ ranging from 0.155 to 0.198 on different lattice volume. The Binder cumulant, the susceptibilities and reweighted distributions of the imaginary part of Polyakov loop are employed to determine the nature of end points of RW transition line. The simulations show that the RW end point is first order at large and small values of $\kappa$, whereas there are no decisive evidence that transitions at the intermediate values of $\kappa$ in our simulations are 3D Ising universality class.

View original: http://arxiv.org/abs/1303.0336