Skip to Main content Skip to Navigation
Journal articles

Light clusters in warm stellar matter: explicit mass shifts and universal cluster-meson couplings

Abstract : In-medium modifications of light cluster properties in warm stellar matter are studied within the relativistic mean-field approximation. In-medium effects are included by introducing an explicit binding energy shift analytically calculated in the Thomas-Fermi approximation, supplemented with a phenomenological modification of the cluster couplings to the σ meson. A linear dependence on the σ meson is assumed for the cluster mass, and the associated coupling constant is fixed by imposing that the virial limit at low density is recovered. The resulting cluster abundances come out to be in reasonable agreement with constraints at higher density coming from heavy-ion collision data. Some comparisons with microscopic calculations are also shown.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-01763043
Contributor : Inspire Hep Connect in order to contact the contributor
Submitted on : Tuesday, April 10, 2018 - 4:27:33 PM
Last modification on : Tuesday, November 30, 2021 - 8:32:05 AM

Links full text

Identifiers

Citation

Helena Pais, Francesca Gulminelli, Constança Providência, Gerd Röpke. Light clusters in warm stellar matter: explicit mass shifts and universal cluster-meson couplings. Physical Review C, American Physical Society, 2018, 97 (4), pp.045805. ⟨10.1103/PhysRevC.97.045805⟩. ⟨hal-01763043⟩

Share

Metrics

Les métriques sont temporairement indisponibles