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.
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Abstract
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 |
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