2005/03/29 by Arnau Rios, A. Polls, Artur Polls +3 · 1 citation
Physics and Astronomy · #Baryon #High-Energy Particle Collisions Research #Hyperon #Isospin #Nuclear matter #Nuclear physics #Nuclear physics research studies #Nucleon #Particle (ecology) #Particle physics #Physics #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1103/physrevc.72.024316
published as Phys.Rev. C72 (2005) 024316 · REVTEX4 - 23 pages, 13 figures - Submitted to Phys. Rev. C
arxiv created 2005/03/29 · openalex publication_date 2005/08/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
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 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 \ensuremathβ-stable composition that includes a nonzero 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.