ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

Chiral phase transition of (2+1)-flavor QCD

Ding, HT and Hegde, P and Karsch, F and Lahiri, A and Li, ST and Mukherjee, S and Petreczky, P (2019) Chiral phase transition of (2+1)-flavor QCD. In: Proceedings of Science, 982 . pp. 211-214.

pro_sci_334_2018.pdf - Published Version

Download (1MB) | Preview
Official URL: https://doi.org/10.22323/1.334.0171


The chiral phase transition temperature Tc0 is a fundamental quantity of QCD. To determine this quantity we have performed simulations of (2 + 1)-flavor QCD using the Highly Improved Staggered Quarks (HISQ/tree) action on Nτ = 6,8 and 12 lattices with aspect ratios Nσ/Nτ ranging from 4 to 8. In our simulations the strange quark mass is fixed to its physical value mphys , and the values of two degenerate light quark masses ml are varied from mphys /20 to mphys /160 which correspond to a Goldstone pion mass mπ ranging from 160 MeV to 55 MeV in the continuum limit. By investigating the light quark mass dependence and the volume dependence of various chiral observables, e.g. chiral susceptibilities and Binder cumulants, no evidence for a first order phase transition in our current quark mass window is found. Two estimators T60 and Tδ are proposed to extract the chiral phase transition temperature Tc0 in the chiral and continuum limit and our current estimate for Tc0 is 132+−36 MeV.

Item Type: Journal Article
Publication: Proceedings of Science
Publisher: Sissa Medialab Srl
Additional Information: The copyright of this article belongs to the Sissa Medialab Srl.
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited: 09 Mar 2019 09:10
Last Modified: 16 Aug 2022 08:41
URI: https://eprints.iisc.ac.in/id/eprint/61892

Actions (login required)

View Item View Item