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arXiv · 0810.2615

Nuclear condensation and symmetry energy of dilute nuclear matter: an S-matrix approach

J. N. De·S. K. Samaddar
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Abstract

Based on the general analysis of the grand canonical partition function in the S-matrix framework, the calculated results on symmetry energy, free energy and entropy of dilute warm nuclear matter are presented. At a given temperature and density, the symmetry energy or symmetry free energy of the clusterized nuclear matter in the S-matrix formulation deviates, particularly at low temperature and relatively higher density, in a subtle way, from the linear dependence on the square of the isospin asymmetry parameter $X=(ρ_n-ρ_p)/(ρ_n+ρ_p)$, contrary to those obtained for homogeneous nucleonic matter. The symmetry coefficients, in the conventional definition, can then be even negative. The symmetry entropy similarly shows a very different behavior.

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J. N. De, S. K. Samaddar. 2008-12-10. Nuclear condensation and symmetry energy of dilute nuclear matter: an S-matrix approach. https://doi.org/10.1103/physrevc.78.065204

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