Finite temperature QCD phase transition and its scaling window from Wilson twisted mass fermions
1 Jülich Supercomputing Centre, Forschungszentrum Jülich, D-52428 Jülich, Germany
2 Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, 141980 Russia
3 INFN, Sezione di Firenze, 50019 Sesto Fiorentino (FI), Italy
4 Samara National Research University, Samara, 443086 Russia
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Published online: 11 January 2022
We study the properties of finite temperature QCD using lattice simulations with Nf = 2 + 1 + 1 Wilson twisted mass fermions for pion masses from physical up to heavy quark regime. In particular, we investigate the scaling properties of the chiral phase transition close to the chiral limit. We found compatibility with O(4) universality class for pion masses up to physical and in the temperature range [120 : 300] MeV. We also discuss other alternatives, including mean field behaviour or Z2 scaling. We provide an estimation of the critical temperature in the chiral limit, T0 = 134−4+6 MeV, which is stable against various scaling scenarios.
© The Authors, published by EDP Sciences, 2022
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