Speaker
Andrey Kotov
Description
We investigate the thermal QCD phase transition and its scaling properties on the lattice. The simulations are performed with N_f=2+1+1 Wilson twisted mass fermions at pion masses from physical up to heavy quark regime. We introduce a new chiral order parameter, which is free from linear mass contributions and turns out to be useful for the study of scaling behaviour. Our results are compatible with O(4) universal scaling for the physical pion mass and the temperature range [120:300] MeV. Violations to scaling at larger masses and other possible scenarios, including mean field behaviour and Z(2) universality class are also discussed. We provide an estimation for the critical temperature in the chiral limit T_0.
