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Bulk and single-particle properties of hyperonic matter at finite temperature
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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 Beta-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.
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RIOS HUGUET, Arnau, et al. Bulk and single-particle properties of hyperonic matter at finite temperature. Physical Review C. 2005. Vol. 72, num. 2, pags. 024316-1-024316-10. ISSN 0556-2813. [consulted: 14 of October of 2026]. Available at: https://hdl.handle.net/2445/11016