منابع مشابه
0 Hyperon - hyperon interactions and properties of neutron star matter
We present results from Brueckner–Hartree–Fock calculations for β-stable neutron star matter with nucleonic and hyperonic degrees of freedom, employing the most recent parametrizations of the baryon-baryon interaction of the Nijmegen group. It is found that the only strange baryons emerging in β-stable matter up to total baryonic densities of 1.2 fm −3 are Σ − and Λ. The corresponding equations...
متن کاملHyperon-hyperon interactions and properties of neutron star matter
We present results from Brueckner-Hartree-Fock calculations for b-stable neutron star matter with nucleonic and hyperonic degrees of freedom, employing the most recent parametrizations of the baryon-baryon interaction of the Nijmegen group. It is found that the only strange baryons emerging in b-stable matter up to total baryonic densities of 1.2 fm are S and L . The corresponding equations of ...
متن کاملKaon condensation in neutron star using relativistic mean field models
We use the modified quark-meson coupling and the quantum hadrodynamics models to study the properties of neutron star. Coupling constants of both models are adjusted to reproduce the same saturation properties. The onset of kaon condensation in neutron star matter is studied in detail over a wide range of kaon optical potential values. Once the kaon condensation takes place, the population of k...
متن کاملA neutron star model in the nonlinear Relativistic Mean-Field Theory
The nucleon masses are denoted by MN whereas ms, Mω, Mρ and Mδ are masses assigned to the meson fields. The parameters entering the Lagrangian function (1) have been chosen to reproduce the equilibrium properties of symmetric nuclear matter. As it is usually assumed in quantum hadrodynamics [ 1] the mean field approximation is adopted and for the ground state of homogeneous infinite matter, qua...
متن کاملHyperon-mixed neutron star with universal many-body repulsion
Neutron stars with large masses ∼ 2M⊙ require the hard stiffness of equation of state (EoS) of neutron-star matter. On the other hand, hyperon mixing brings about remarkable softening of EoS. In order to solve this problem, a multi-pomeron exchange potential (MPP) is introduced as a model for the universal many-body repulsion in baryonic systems on the basis of the Extended Soft Core (ESC) bary...
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ژورنال
عنوان ژورنال: Europhysics Letters (EPL)
سال: 2007
ISSN: 0295-5075,1286-4854
DOI: 10.1209/0295-5075/78/32001