Liquid-gas phase transition in nuclear matter including strangeness

Journal Article · Mon Nov 01 00:00:00 EST 2004 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.70.055204· OSTI ID:20695768

Wang, P; Leinweber, D B; Williams, A G ^[1]; Thomas, A W ^[1]

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1. Special Research Center for the Subatomic Structure of Matter (CSSM) and Department of Physics, University of Adelaide, Adelaide 5005 (Australia)

We apply the chiral SU(3) quark mean field model to study the properties of strange hadronic matter at finite temperature. The liquid-gas phase transition is studied as a function of the strangeness fraction. The pressure of the system cannot remain constant during the phase transition, since there are two independent conserved charges (baryon and strangeness number). In a range of temperatures around 15 MeV (precise values depending on the model used) the equation of state exhibits multiple bifurcates. The difference in the strangeness fraction f{sub s} between the liquid and gas phases is small when they coexist. The critical temperature of strange matter turns out to be a nontrivial function of the strangeness fraction.

• OSTI ID: 20695768
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 70, Issue 5; Other Information: DOI: 10.1103/PhysRevC.70.055204; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
CHIRAL SYMMETRY
CHIRALITY
CONSERVATION LAWS
CRITICAL TEMPERATURE
EQUATIONS OF STATE
MEAN-FIELD THEORY
MEV RANGE
NUCLEAR MATTER
PHASE TRANSFORMATIONS
QUANTUM FIELD THEORY
QUARK MODEL
QUARKS
STRANGE PARTICLES
STRANGENESS
SU-3 GROUPS