The Nuclear Symmetry Energy in Self-Consistent Green-Function Calculations(Nuclear physics)

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概要

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• In this paper we have reported the study of symmetry energy within the self-consistent Green-function approach. For the sake of comparison, the same calculations are performed using Brueckner-Hartree-Fock approximation. The symmetry energy is calculated for different densities and discussed in comparison with other predictions. The self-consistent Green's function leads to slightly larger energies as compared to the Brueckner-Hartree-Fock approach. This effect increases with density and thereby leads to smaller symmetry energies. The calculation of the symmetry energy in the Brueckner-Hartree-Fock approach shows a monotonic increase as a function of baryonic density. We extract the symmetry energy coefficient at density ρ=0.16fm^<-3> to be about 28.3MeV for self-consistent Green-function approach using CD-Bonn potential, which is in good agreement with the empirical value of 30±4MeV. The dependence of the equation of state on the neutron excess parameter is clearly linear as function of α^2 for self-consistent Green-function approach.

• 社団法人日本物理学会の論文
• 2008-08-15

著者

• HASSANEEN Khaled

  Physics Department, Faculty of Science, Sohag University

• Gad Khalaf

  Physics Department Faculty Of Science Sohag University

• Hassaneen Khaled

  Physics Department Faculty Of Science Sohag University

関連論文

• Self-Consistent Green Function Calculations for Isospin Asymmetric Nuclear Matter(Nuclear Physics)
• The Nuclear Symmetry Energy in Self-Consistent Green-Function Calculations(Nuclear physics)

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