Binding Energies of Hyperonic Matter and Applications to Neutron Stars

Journal Article · Fri Oct 21 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3647447· OSTI ID:21611972

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)

The conserving nonlinear, nonchiral {sigma}-{omega}-{rho} hadronic mean-field approximation is applied to saturation properties of nuclear and hyperonic matter, properties of hadron and hadron-quark neutron stars. 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. The effective masses and coupling constants become density-dependent, and they simultaneously determine binding energies and saturation properties of nuclear matter and hyperonic matter. The conserving 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-quark stars become more stable at high densities compared to pure hadronic and strange quark stars.

• OSTI ID: 21611972
• Journal Information: AIP Conference Proceedings, Vol. 1388, Issue 1; Conference: BARYONS' 10: International conference on the structure of baryons, Osaka (Japan), 7-11 Dec 2010; Other Information: DOI: 10.1063/1.3647447; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
APPROXIMATIONS
BAG MODEL
BINDING ENERGY
CORRECTIONS
COUPLING CONSTANTS
EFFECTIVE MASS
EQUATIONS OF MOTION
FLUCTUATIONS
HYPERONS
MEAN-FIELD THEORY
NEUTRON STARS
NONLINEAR PROBLEMS
NUCLEAR MATTER
OMEGA-782 MESONS
RENORMALIZATION
RHO-770 MESONS
S QUARKS
THERMODYNAMICS
BARYONS
BOSONS
CALCULATION METHODS
COMPOSITE MODELS
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
ENERGY
EQUATIONS
EXTENDED PARTICLE MODEL
FERMIONS
HADRONS
MASS
MATHEMATICAL MODELS
MATTER
MESONS
PARTIAL DIFFERENTIAL EQUATIONS
PARTICLE MODELS
QUARK MODEL
QUARKS
STARS
STRANGE PARTICLES
VARIATIONS
VECTOR MESONS