Título:
|
Bulk and single-particle properties of hyperonic matter at finite temperature
|
Autor/a:
|
Rios Huguet, Arnau; Polls Martí, Artur; Ramos Gómez, Àngels; Vidaña Haro, Isaac
|
Otros autores:
|
Universitat de Barcelona |
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 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. |
Materia(s):
|
-Astrofísica nuclear -Estructura nuclear -Nuclear astrophysics -Nuclear structure |
Derechos:
|
(c) The American Physical Society, 2005
|
Tipo de documento:
|
Artículo Artículo - Versión publicada |
Editor:
|
The American Physical Society
|
Compartir:
|
|