Hyperons in a relativistic mean-field approach to asymmetric nuclear matter
- Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, SK-842 28 Bratislava (Slovakia)
Relativistic mean-field theory with {delta} mesons, nonlinear isoscalar self-interactions, and isoscalar-isovector cross interaction terms with parametrizations obtained to reproduce Dirac-Brueckner-Hartree-Fock calculations for nuclear matter is used to study asymmetric nuclear matter properties in {beta} equilibrium, including hyperon degrees of freedom and (hidden) strange mesons. The influence of cross interactions on the composition of hyperon matter and the electron chemical potential is examined. Softening of the nuclear equation of state by cross interactions results in a lowering of the hyperonization, although simultaneously enhancing a hyperon-induced decrease of the electron chemical potential, thus indicating a further shift of the kaon condensate occurrence to higher densities.
- OSTI ID:
- 20695727
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 70, Issue 5; Other Information: DOI: 10.1103/PhysRevC.70.054309; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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