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- Title
Light clusters in warm stellar matter: calibrating the cluster couplings.
- Authors
Custódio, Tiago; Falcão, Alexandre; Pais, Helena; Providência, Constança; Gulminelli, Francesca; Röpke, Gerd
- Abstract
The abundances of light clusters within a formalism that considers in-medium effects are calculated using several relativistic mean-field models, with both density-dependent and density-independent couplings. Clusters are introduced as new quasiparticles, with a modified coupling to the scalar meson field. A comparison with experimental data from heavy ion collisions allows settling the model dependence of the results and the determination of the couplings of the light clusters to the meson fields. We find that extra experimental constraints at higher density are needed to convincingly pin down the density associated to the melting of clusters in the dense nuclear medium. The role of neutron rich clusters, such as 6 He, in asymmetric matter is discussed.
- Subjects
HEAVY ion collisions; QUASIPARTICLES; SCALAR field theory; CLUSTER theory (Nuclear physics); MATTER
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2020, Vol 56, Issue 11, p1
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/s10050-020-00302-w