QCD phase transition with Kogut-Susskind fermions on an 8 sup 3 times 2 lattice

Journal Article · Wed May 15 04:00:00 EDT 1991 · Physical Review, D (Particles Fields); (USA)

DOI:https://doi.org/10.1103/PhysRevD.43.3475· OSTI ID:5796210

Hsieh, P F ^[1]

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1. Department of Physics, Columbia University, New York, New York 10027 (US)

We report a study of the QCD finite-temperature phase transition in the presence of dynamical fermions with fermion masses ranging from 5.0 to 0.02. These calculations were performed with four flavors of Kogut-Susskind fermions on an 8{sup 3}{times}2 lattice using the hybrid molecular dynamics'' algorithm. The transition remains unambiguously first order for fermion masses in lattice units as low as 4.5, but weakens dramatically as the mass is reduced to 4.0. Calculations with masses of 2.0 and below show no evidence of a transition. Unlike studies with {ital N}{sub {ital t}}{gt}2, we see no evidence of a first-order phase transition for masses as small as 0.02.

• OSTI ID: 5796210
• Journal Information: Physical Review, D (Particles Fields); (USA), Journal Name: Physical Review, D (Particles Fields); (USA) Vol. 43:10; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
COMPOSITE MODELS
DIRAC OPERATORS
FERMIONS
FIELD THEORIES
FLAVOR MODEL
LATTICE FIELD THEORY
LIE GROUPS
MASS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
MOLECULAR MODELS
MONTE CARLO METHOD
PARTICLE MODELS
PHASE TRANSFORMATIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUANTUM OPERATORS
QUARK MODEL
SU GROUPS
SU-2 GROUPS
SU-3 GROUPS
SYMMETRY
SYMMETRY BREAKING
SYMMETRY GROUPS
TEMPERATURE DEPENDENCE