Extended Chiral ({sigma},{pi},{omega}) Mean-Field Model with Vacuum Fluctuation Corrections

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

DOI:https://doi.org/10.1063/1.3647448· OSTI ID:21611974

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

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1. Research Center for Nuclear Physics (RCNP) Osaka University (Japan)
2. Osaka Gakuin University (Japan)

Density-dependent relations among saturation properties of symmetric nuclear matter and properties of hadronic stars are discussed by applying the conserving chiral nonlinear ({sigma},{pi},{omega}) mean-field theory. The chiral nonlinear ({sigma},{pi},{omega}) mean-field theory is an extension of the conserving nonlinear (nonchiral){sigma}-{omega} mean-field theory, which is thermodynamically consistent, relativistic and Lorentz-covariant. In the extended chiral ({sigma},{pi},{omega}) mean-field model, all the masses of hadrons are produced by the spontaneous chiral symmetry breaking, which is different from conventional chiral partner models. By comparing both nonchiral and chiral mean-field approximations, the effects of the chiral symmetry breaking mechanism on the mass of {sigma}-meson, coefficients of nonlinear interactions and Fermi-liquid properties are investigated in nuclear matter and neutron stars.

• OSTI ID: 21611974
• 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: 10.1063/1.3647448; (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
BINDING ENERGY
CHIRAL SYMMETRY
CHIRALITY
CORRECTIONS
FERMI GAS MODEL
FLUCTUATIONS
MEAN-FIELD THEORY
NEUTRON STARS
NONLINEAR PROBLEMS
NUCLEAR MATTER
OMEGA-782 MESONS
PIONS
RELATIVISTIC RANGE
REST MASS
SYMMETRY BREAKING
BOSONS
CALCULATION METHODS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
HADRONS
MASS
MATHEMATICAL MODELS
MATTER
MESONS
NUCLEAR MODELS
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
STARS
SYMMETRY
VARIATIONS
VECTOR MESONS