Symmetry energy of dilute warm nuclear matter

Abstract

The symmetry energy of nuclear matter is a fundamental ingredient in the investigation of exotic nuclei, heavy-ion collisions and astrophysical phenomena. New data from heavy-ion collisions can be used to extract the free symmetry energy and the internal symmetry energy at subsaturation densities and temperatures below 10 MeV. Conventional theoretical calculations of the symmetry energy based on mean-field approaches fail to give the correct low-temperature, low-density limit that is governed by correlations, in particular by the appearance of bound states. A recently developed quantum statistical (QS) approach that takes the formation of clusters into account predicts symmetry energies that are in very good agreement with the experimental data. A consistent description of the symmetry energy is given that joins the correct low-density limit with quasiparticle approaches valid near the saturation density.

4 pages, 2 figures, 1 table

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Cited by in corpus (12)

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• Density and Temperature of Fermions from Quantum Fluctuations
• Constraining supernova equations of state with equilibrium constants from heavy-ion collisions
• Nucleon self-energies for supernova equations of state
• Charged current neutrino interactions in core-collapse supernovae in a virial expansion
• Understanding the symmetry energy using data from the ALADIN-2000 Collaboration taken at the GSI Large Neutron Detector
• Isotopic ratio, isotonic ratio, isobaric ratio and Shannon information uncertainty
• Dineutron correlations and BCS-BEC crossover in nuclear matter with the Gogny pairing force
• Non-Abelian behavior of $\alpha$ Bosons in cold symmetric nuclear matter
• Phenomenological theory of clustering at the nuclear surface and symmetry energy