Universal critical behavior and the transition temperature in (2+1)-flavor QCD

Journal Article · Mon May 23 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3575079· OSTI ID:21516928

Schmidt, Christian ^[1]

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1. Frankfurt Institute for Advanced Studies, J.W. Goethe Universitaet Frankfurt, D-60438 Frankfurt (Germany)

We discuss the universal critical behavior in (2+1)-flavor QCD by analyzing lattice data from improved staggered fermions generated by the HotQCD Collaboration. We present recent results from two different lattice discretizations and various lattice spacings (N{sub {tau}} = 6,8,12) at fixed physical strange quark mass (m{sub s}) but varying light quark mass (m{sub l}). We find that the chiral order-parameter, i.e. the chiral condensate, shows the expected universal scaling that is associated with the critical point in the chiral limit already for light quark masses m{sub l}/m{sub s} < or approx. 0.05. From an analysis of the disconnected chiral susceptibility we estimate a preliminary value of the QCD transition temperature.

• OSTI ID: 21516928
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1343; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPOSITE MODELS
CONSTRUCTIVE FIELD THEORY
D QUARKS
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
FLAVOR MODEL
LAGRANGIAN FIELD THEORY
LATTICE FIELD THEORY
MASS
MATHEMATICAL MODELS
ORDER PARAMETERS
PARTICLE MODELS
PHYSICAL PROPERTIES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
RENORMALIZATION
S QUARKS
STRANGE PARTICLES
SYMMETRY BREAKING
THERMODYNAMIC PROPERTIES
THREE-DIMENSIONAL CALCULATIONS
TRANSITION TEMPERATURE
U QUARKS