Properties of Isospin Asymmetric Nuclear Matter and Extended BHF Approach (Ⅳ) Single-Particle Potential and Effective Mass

ZUO Wei; Lombardo U; LIU Jian-Ye; LI Jun-Qing

Chinese Physics C> 2003, Vol. 27> Issue(5) : 416-420

Properties of Isospin Asymmetric Nuclear Matter and Extended BHF Approach (Ⅳ) Single-Particle Potential and Effective Mass

Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China2 INFN-LNS,44 Via S.Sofia, I-95123 Catania,Italy

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Abstract：
Within the isospin dependent Extended Brueckner-Hartree-Fock framework,the single particle potentials and effective masses of a neutron and a proton in isospin asymmetric nuclear matter as well as their isospin denpendence have been investigated. The effects of ground state correlations are also studied and discussed.It is found that the meutron mean field becomes more repulsive while the proton one becomes more attractive as increasing asymmetry parameter β,and both display a linear dependence on β at the lowest order approximation. The ground state correlations lead to a repulsive and nonlinear β-dependent contribution to both the neutron and proton single particle potentials.

References

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ZUO Wei, Lombardo U, LIU Jian-Ye and LI Jun-Qing. Properties of Isospin Asymmetric Nuclear Matter and Extended BHF Approach (Ⅳ) Single-Particle Potential and Effective Mass[J]. Chinese Physics C, 2003, 27(5): 416-420.

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Received: 2002-07-22
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Properties of Isospin Asymmetric Nuclear Matter and Extended BHF Approach (Ⅳ) Single-Particle Potential and Effective Mass

Corresponding author: ZUO Wei,

Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China2 INFN-LNS,44 Via S.Sofia, I-95123 Catania,Italy

Received Date: 2002-07-22

Accepted Date: 1900-01-01

Available Online: 2003-05-05

Abstract: Within the isospin dependent Extended Brueckner-Hartree-Fock framework,the single particle potentials and effective masses of a neutron and a proton in isospin asymmetric nuclear matter as well as their isospin denpendence have been investigated. The effects of ground state correlations are also studied and discussed.It is found that the meutron mean field becomes more repulsive while the proton one becomes more attractive as increasing asymmetry parameter β,and both display a linear dependence on β at the lowest order approximation. The ground state correlations lead to a repulsive and nonlinear β-dependent contribution to both the neutron and proton single particle potentials.

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Properties of Isospin Asymmetric Nuclear Matter and Extended BHF Approach (Ⅳ) Single-Particle Potential and Effective Mass

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