Density-Dependent Relations among Properties of Hadronic Matter and Applications to Hadron-Quark Stars

Journal Article · Fri May 06 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3584079· OSTI ID:21516841

Uechi, Hiroshi ^[1]; Uechi, Schun T ^[2]

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1. Department of Distributions and Communication Sciences, Osaka Gakuin University, Osaka (Japan)
2. Research Center for Nuclear Physics (RCNP), Osaka University, Osaka (Japan)

Density-dependent relations among the saturation properties of symmetric nuclear matter and hyperonic matter, and properties of hadron-(strange) quark stars are shown by applying the conserving nonlinear {sigma}-{omega}-{rho} hadronic mean-field theory. Nonlinear interactions are renormalized self-consistently as effective coupling constants, effective masses, and sources of equations of motion by maintaining thermodynamic consistency to the mean-field approximation. Effective masses and coupling constants at the saturation point of symmetric nuclear matter simultaneously determine the binding energy and saturation properties of hyperonic matter. The coupling constants expected from the hadronic mean-field model and SU(6) quark model for the vector coupling constants are compared by calculating masses of hadron-quark neutron stars. The nonlinear {sigma}-{omega}-{rho} mean-field approximation with vacuum fluctuation corrections and strange quark matter defined by the MIT-bag model were employed to examine properties of hadron-(strange) quark stars. We found that hadron-(strange) quark stars become more stable at high densities compared to pure hadronic and strange quark stars.

• OSTI ID: 21516841
• Journal Information: AIP Conference Proceedings, Vol. 1355, Issue 1; Conference: International symposium on new faces of atomic nuclei, Okinawa (Japan), 15-17 Nov 2010; Other Information: DOI: 10.1063/1.3584079; (c) 2011 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
APPROXIMATIONS
BAG MODEL
BINDING ENERGY
CORRECTIONS
COUPLING CONSTANTS
DENSITY
EQUATIONS OF MOTION
FLUCTUATIONS
INTERACTIONS
MASS
MEAN-FIELD THEORY
NEUTRON STARS
NONLINEAR PROBLEMS
NUCLEAR MATTER
S QUARKS
SATURATION
SYMMETRY
CALCULATION METHODS
COMPOSITE MODELS
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
ENERGY
EQUATIONS
EXTENDED PARTICLE MODEL
FERMIONS
MATHEMATICAL MODELS
MATTER
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE MODELS
PHYSICAL PROPERTIES
QUARK MODEL
QUARKS
STARS
STRANGE PARTICLES
VARIATIONS