Light clusters are included in the equation of state of nuclear matter within the relativistic mean-field theory. The effect of the cluster-meson coupling constants on the dissolution density is discussed. Theoretical and experimental constraints are used to fix the cluster-meson couplings. The relative light cluster fractions are calculated for asymmetric matter in chemical equilibrium at finite temperature. It is found that above $T=5$ MeV deuterons and tritons are the clusters in larger abundances. The results do not depend strongly on the relativistic mean-field interaction chosen.

• Received 4 January 2012

DOI:https://doi.org/10.1103/PhysRevC.85.055811