Comments on the nuclear symmetry energy

Details Comments on the nuclear symmetry energy Comments on the nuclear symmetry energy

2002-11-14

arxiv.org/abs/nucl-th/0211044v1

Phys.Lett. B572 (2003) 152-158

Physics

Nuclear Physics

Nuclear Theory

11 pages, 4 figures

Scientific paper

According to standard textbooks, the nuclear symmetry energy originates from the {\it kinetic} energy and the {\it interaction} itself. We argue that this view requires certain modifications. We ascribe the physical origin of the {\it kinetic} term to the discreteness of fermionic levels of, in principle arbitrary binary fermionic systems, and relate its mean value directly to the average level density. Physically it connects this part also to the isoscalar part of the interaction which, at least in self-bound systems like atomic nuclei, decides upon the spatial dimensions of the system. For the general case of binary fermionic systems possible external confining potentials as well as specific boundary conditions will contribute to this part. The reliability of this concept is tested using self-consistent Skyrme Hartree-Fock calculations.

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