Chiral phase transition in (2 + 1)-flavor QCD - INSPIRE

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

HotQCD

Collaboration

•

Heng-Tong Ding
(
- CCNU, Wuhan, Inst. Part. Phys. and
- Hua-Zhong Normal U., LQLP
)

Mar 16, 2019

7 pages

Part of Proceedings, 36th International Symposium on Lattice Field Theory (Lattice 2018) : East Lansing, MI, United States, July 22-28, 2018, 171

Published in:

PoS LATTICE2018 (2019) 171

Contribution to:

- Lattice 2018
, 171

Published: Mar 16, 2019 by SISSA

e-Print:

1905.11610 [hep-lat]

DOI:

10.22323/1.334.0171

View in:

ADS Abstract Service

reference search12 citations

Citations per year

Abstract: (SISSA)

The chiral phase transition temperature

T_{c}^{0}

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

N_{\tau}=6, 8

and 12 lattices with aspect ratios

N_{\sigma}/N_{\tau}

ranging from 4 to 8. In our simulations the strange quark mass is fixed to its physical value

m_{s}^{\rm{phy}}

, and the values of two degenerate light quark masses

m_{l}

are varied from

m_{s}^{\rm{phy}}/20

to

m_{s}^{\rm{phy}}/160

which correspond to a Goldstone pion mass

m_{\pi}

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

T_{60}

and

T_{\delta}

are proposed to extract the chiral phase transition temperature

T_{c}^{0}

in the chiral and continuum limit and our current estimate for

T_{c}^{0}

is

132_{-6}^{+3}

MeV.

Note:

Proceedings of the 36th International Symposium on Lattice Field Theory (Lattice2018), July 22-28, 2018, East Lansing, Michigan, USA

critical phenomena: chiral
critical phenomena: temperature
susceptibility: chiral
quark: mass dependence
lattice field theory
numerical calculations
quark: staggered
quark: current
quark: flavor: 3
quantum chromodynamics: critical phenomena

References(12)

Figures(12)

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HotQCD

Collaboration

•

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)

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