Chiral Phase Transition Temperature in ( 2+1 )-Flavor QCD - INSPIRE

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Chiral Phase Transition Temperature in ( 2+1 )-Flavor QCD

HotQCD

Collaboration

•

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

Mar 12, 2019

6 pages

Published in:

Phys.Rev.Lett. 123 (2019) 6, 062002

Published: Aug 9, 2019

e-Print:

1903.04801 [hep-lat]

DOI:

10.1103/PhysRevLett.123.062002

View in:

reference search233 citations

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Abstract: (APS)

We present a lattice-QCD-based determination of the chiral phase transition temperature in QCD with two degenerate, massless quarks and a physical strange quark mass using lattice QCD calculations with the highly improved staggered quarks action. 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 58 MeV≲mπ≲163 MeV. The chiral phase transition temperature is determined by extrapolating to vanishing pion mass using universal scaling analysis. Finite-volume effects are controlled by extrapolating to the thermodynamic limit using spatial lattice extents in the range of 2.8–4.5 times the inverse of the pion mass. Continuum extrapolations are carried out by using three different values of the lattice cutoff, corresponding to lattices with temporal extents Nτ=6, 8, and 12. After thermodynamic, continuum, and chiral extrapolations, we find the chiral phase transition temperature Tc0=132-6+3 MeV.

Elementary Particles and Fields
quantum chromodynamics: thermodynamics
critical phenomena: chiral
critical phenomena: temperature
quark: mass dependence
temperature: transition
transition: chiral
quark: massless
finite size: effect
lattice

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