Chiral phase structure of three flavor QCD at vanishing baryon number density
Abstract
In this paper, we investigate the phase structure of QCD with three degenerate quark flavors as a function of the degenerate quark masses at vanishing baryon number density. We use the highly improved staggered quarks on lattices with temporal extent N_{τ} = 6 and perform calculations for six values of quark masses, which in the continuum limit correspond to pion masses in the range 80 MeV ≲ m_{π} ≲ 230 MeV. By analyzing the volume and temperature dependence of the chiral condensate and chiral susceptibility, we find no direct evidence for a firstorder phase transition in this range of pion mass values. Finally, relying on the universal scaling behaviors of the chiral observables near an anticipated chiral critical point, we estimate an upper bound for the critical pion mass m^{c}_{π} ≲ 50 MeV, below which a region of firstorder chiral phase transition is favored.
 Authors:

 Michigan State Univ., East Lansing, MI (United States)
 Central China Normal Univ., Wuhan (China)
 Indian Inst. of Science, Bangalore (India)
 Bielefeld Univ. (Germany); Brookhaven National Lab. (BNL), Upton, NY (United States)
 Bielefeld Univ. (Germany)
 Brookhaven National Lab. (BNL), Upton, NY (United States)
 Publication Date:
 Research Org.:
 Brookhaven National Lab. (BNL), Upton, NY (United States); Central China Normal Univ., Wuhan (China); Bielefeld Univ. (Germany)
 Sponsoring Org.:
 USDOE; German Federal Ministry of Education and Research (BMBF); National Natural Science Foundation of China (NNSFC)
 OSTI Identifier:
 1392298
 Alternate Identifier(s):
 OSTI ID: 1351684
 Report Number(s):
 BNL1142632017JA
Journal ID: ISSN 24700010; R&D Project: KB0301020
 Grant/Contract Number:
 SC0012704; 05P15PBCAA; 11535012; 11521064
 Resource Type:
 Accepted Manuscript
 Journal Name:
 Physical Review D
 Additional Journal Information:
 Journal Volume: 95; Journal Issue: 7; Journal ID: ISSN 24700010
 Publisher:
 American Physical Society (APS)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; lattice QCD; QCD phase transitions; particles and fields
Citation Formats
Bazavov, A., Ding, H. T., Hegde, P., Karsch, F., Laermann, E., Mukherjee, Swagato, Petreczky, P., and Schmidt, C. Chiral phase structure of three flavor QCD at vanishing baryon number density. United States: N. p., 2017.
Web. doi:10.1103/PhysRevD.95.074505.
Bazavov, A., Ding, H. T., Hegde, P., Karsch, F., Laermann, E., Mukherjee, Swagato, Petreczky, P., & Schmidt, C. Chiral phase structure of three flavor QCD at vanishing baryon number density. United States. doi:10.1103/PhysRevD.95.074505.
Bazavov, A., Ding, H. T., Hegde, P., Karsch, F., Laermann, E., Mukherjee, Swagato, Petreczky, P., and Schmidt, C. Wed .
"Chiral phase structure of three flavor QCD at vanishing baryon number density". United States. doi:10.1103/PhysRevD.95.074505. https://www.osti.gov/servlets/purl/1392298.
@article{osti_1392298,
title = {Chiral phase structure of three flavor QCD at vanishing baryon number density},
author = {Bazavov, A. and Ding, H. T. and Hegde, P. and Karsch, F. and Laermann, E. and Mukherjee, Swagato and Petreczky, P. and Schmidt, C.},
abstractNote = {In this paper, we investigate the phase structure of QCD with three degenerate quark flavors as a function of the degenerate quark masses at vanishing baryon number density. We use the highly improved staggered quarks on lattices with temporal extent Nτ = 6 and perform calculations for six values of quark masses, which in the continuum limit correspond to pion masses in the range 80 MeV ≲ mπ ≲ 230 MeV. By analyzing the volume and temperature dependence of the chiral condensate and chiral susceptibility, we find no direct evidence for a firstorder phase transition in this range of pion mass values. Finally, relying on the universal scaling behaviors of the chiral observables near an anticipated chiral critical point, we estimate an upper bound for the critical pion mass mcπ ≲ 50 MeV, below which a region of firstorder chiral phase transition is favored.},
doi = {10.1103/PhysRevD.95.074505},
journal = {Physical Review D},
number = 7,
volume = 95,
place = {United States},
year = {2017},
month = {4}
}
Web of Science
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