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- Title
ISOSPIN AND DENSITY DEPENDENCIES OF NUCLEAR MATTER SYMMETRY ENERGY COEFFICIENTS.
- Authors
Braghin, Fábio L.
- Abstract
Symmetry energy coefficients of explicitly isospin asymmetric nuclear matter at variable densities (from 0.5ρ[sub 0] up to 2ρ[sub 0]) are studied as generalized screening functions. An extended stability condition for asymmetric nuclear matter is proposed. We find the possibility of obtaining stable asymmetric nuclear matter even in some cases for which the symmetric nuclear matter limit is unstable. Skyrme-type forces are extensively used in analytical expressions of the symmetry energy coefficients derived as generalized screening functions in the four channels of the particle hole interaction producing alternative behaviors at different ρ and b (respectively, the density and the asymmetry coefficient). The spin and spin-isospin coefficients, with corrections to the usual Landau Migdal parameters, indicate the possibility of occurring instabilities with common features depending on the nuclear density and n–p asymmetry. Possible relevance for high energy heavy ions collisions and astrophysical objects is discussed.
- Subjects
ISOBARIC spin; HEAVY ions; COLLISIONS (Nuclear physics); ASYMMETRY (Chemistry); NUCLEAR physics; PHYSICS
- Publication
International Journal of Modern Physics E: Nuclear Physics, 2003, Vol 12, Issue 6, p755
- ISSN
0218-3013
- Publication type
Article
- DOI
10.1142/S0218301303001521