The equation of state and symmetry energy of low density 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. A recently developed quantum statistical (QS) approach that takes the formation of clusters into account predicts low density symmetry energies far above the usually quoted mean field limits. A consistent description of the symmetry energy has been developed that joins the correct low-density limit with values calculated from quasi-particle approaches valid near the saturation density. The results are confronted with experimental values for free symmetry energies and internal symmetry energies, determined at sub-saturation densities and temperatures below 10 MeV using data from heavy-ion collisions. There is very good agreement between the experimental symmetry energy values and those calculated in the QS approach

16 pages, 10 figures. arXiv admin note: text overlap with arXiv:0908.2344

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• Towards Understanding Astrophysical Effects of Nuclear Symmetry Energy
• Dense Nuclear Matter Equation of State from Heavy-Ion Collisions
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• Nuclear matter equation of state including few-nucleon correlations $(A\le 4)$
• Towards a Unified Quark-Hadron Matter Equation of State for Applications in Astrophysics and Heavy-Ion Collisions
• The interplay of short-range correlations and nuclear symmetry energy in hard photon productions from heavy-ion reactions at Fermi energies
• Equilibrium constants of Hydrogen and Helium isotopes at low nuclear densities
• q-deformed statistics and the role of a light fermionic dark matter in the supernova SN1987A cooling
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• Fermi liquid, clustering, and structure factor in dilute warm nuclear matter
• Composition of nuclear matter with light clusters and Bose-Einstein condensation of $\alpha$ particles
• Incompressibility and Symmetry Energy of Neutron Star
• Medium effects on freeze-out of light clusters at NICA energies
• Symmetry energy in neutron star matter
• Cold dilute nuclear matter with $\alpha$-particle condensation in a generalized nonlinear relativistic mean-field model
• Revisiting the isospin relaxation time in intermediate-energy heavy-ion collisions
• Cluster production and the chemical freeze-out in expanding hot dense matter
• Strangeness and light fragment production at high baryon density
• Origins and Impacts of High-Density Symmetry Energy
• Constraints on light Dark Matter fermions from relic density consideration and Tsallis statistics