We present a lattice QCD based determination of the chiral phase transition temperature in QCD with two massless (up and down) and one strange quark having its physical mass. We propose and calculate two novel estimators for the chiral transition temperature for several values of the light quark masses, corresponding to Goldstone pion masses in the range of 58MeV≲mπ≲163MeV. The chiral phase transition temperature is determined by extrapolating to vanishing pion mass using universal scaling analysis. After thermodynamic, continuum and chiral extrapolations we find the chiral phase transition temperature Tc0=132−6+3 MeV. We also present some preliminary calculations on interplay of effective UA(1) restoration and chiral phase transition towards chiral limit.
@article{arxiv.2003.07920,
title = {QCD phase transition in the chiral limit},
author = {Olaf Kaczmarek and Frithjof Karsch and Anirban Lahiri and Lukas Mazur and Christian Schmidt},
journal= {arXiv preprint arXiv:2003.07920},
year = {2020}
}
Comments
Prepared for the proceeding of NIC Symposium 2020 held at J\"{u}lich, Germany. Based on arXiv:1903.04801. Link to the proceeding contributions : http://hdl.handle.net/2128/24435