Correlations and spectral functions in asymmetric nuclear matter

Details Correlations and spectral functions in asymmetric nuclear matter Correlations and spectral functions in asymmetric nuclear matter

2004-08-12

arxiv.org/abs/nucl-th/0408035v1

Phys.Rev. C70 (2004) 054308

Physics

Nuclear Physics

Nuclear Theory

11 pages, 5 figures

Scientific paper

10.1103/PhysRevC.70.054308

The self-energy of nucleons in asymmetric nuclear matter is evaluated employing different realistic models for the nucleon-nucleon interaction. Starting from the Brueckner Hartree Fock approximation without the usual angle-average in the two-nucleon propagator the effects of the hole-hole contributions are investigated within the self-consistent Green's function approach. Special attention is paid to the isospin-dependence of correlations, which can be deduced from the spectral functions of nucleons in asymmetric matter. The strong components of the proton - neutron interaction lead in neutron-rich matter to a larger depletion for the occupation probability of proton states below the Fermi momentum.

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