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Saturation of nuclear matter and realistic interactions

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Abstract.

In this communication we study symmetric nuclear matter for the Brueckner-Hartree-Fock approach, using two realistic nucleon-nucleon interactions (CD-Bonn and Bonn C). The single-particle energy is calculated self-consistently from the real on-shell self-energy. The relation between different expressions for the pressure is studied in cold nuclear matter. For best calculations the self-energy is calculated with the inclusion of hole-hole (hh) propagation. The effects of hh contributions and a self-consistent treatment within the framework of the Green function approach are investigated. Using two different methods, namely, G-matrix and bare potential, the hh term is calculated. We found that using G-matrix brought about non-negligible contribution to the self-energy, but this difference is very small and can be ignored if compared with the large contribution coming from particle-particle term. The contribution of the hh term leads to a repulsive contribution to the Fermi energy which increases with density. For extended Brueckner-Hartree-Fock approach the Fermi energy at the saturation point fulfills the Hugenholtz-Van Hove relation.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, South Valley University, Sohag, Egypt

    Kh. Gad

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  1. Kh. Gad
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Correspondence to Kh. Gad.

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A. Schäfer

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Gad, K. Saturation of nuclear matter and realistic interactions. Eur. Phys. J. A 22, 405–410 (2004). https://doi.org/10.1140/epja/i2004-10059-y

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  • DOI: https://doi.org/10.1140/epja/i2004-10059-y

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