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Comments on the nuclear symmetry energy
KTH, Superseded Departments, Physics.
KTH, Superseded Departments, Physics.
2003 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 572, no 3-4, 152-158 p.Article in journal (Refereed) Published
Abstract [en]

According to standard textbooks, the nuclear symmetry energy originates from the kinetic energy and the interaction itself. We argue that this view requires certain modifications and propose a different scenario. We ascribe the physical origin of the 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 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 verified using self-consistent Skyrme-Hartree-Fock calculations.

Place, publisher, year, edition, pages
2003. Vol. 572, no 3-4, 152-158 p.
Keyword [en]
symmetry energy, Hartree-Fock calculations, level density, neutron-star densities, skyrme parametrization, level density, subnuclear, isospace, masses
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-22900DOI: 10.1016/j.physletb.2003.08.026ISI: 000186084600006OAI: diva2:341598
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2010-08-23Bibliographically approved

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