Bulk and single-particle properties of hyperonic matter at finite temperature

Abstract

Bulk and single-particle properties of hot hyperonic matter are studied within the Brueckner-Hartree-Fock approximation extended to finite temperature. The bare interaction in the nucleon sector is the Argonne V18 potential supplemented with an effective three-body force to reproduce the saturating properties of nuclear matter. The modern Nijmegen NSC97e potential is employed for the hyperon-nucleon and hyperon-hyperon interactions. The effect of the temperature on the in-medium effective interaction is found to be, in general, very small and the single-particle potentials differ by at most 25% for temperatures in the range from 0 to 60 MeV. The bulk properties of infinite matter of baryons, either nuclear isospin symmetric or a beta-stable composition which includes a non-zero fraction of hyperons, are obtained. It is found that the presence of hyperons can modify the thermodynamical properties of the system in a non-negligible way.

arXiv commentREVTEX4 - 23 pages, 13 figures - Submitted to Phys. Rev. C

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Cited by in corpus (12)

• Strangeness Production close to Threshold in Proton-Nucleus and Heavy-Ion Collisions
• The physics of dense hadronic matter and compact stars
• Heavy Baryons in Compact Stars
• Hyperon stars at finite temperature in the Brueckner theory
• Hot neutron matter from a Self-Consistent Green's Functions approach
• The Microscopic Approach to Nuclear Matter and Neutron Star Matter
• Liquid-gas phase transition in nuclear matter from realistic many-body approaches
• Microscopic predictions of the nuclear matter liquid-gas phase transition
• Nucleon effective mass in hot dense matter
• Effects of $\Lambda$ hyperons on the nuclear equation of state in a Dirac-Brueckner-Hartree-Fock model
• Quantum rearrangement and self-consistent BCS-BEC crossover thermodynamics
• Thermal behavior of the mass and residue of hyperons