Saturation of nuclear matter and realistic interactions
- 38 Downloads
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.
PACS.21.65.+f Nuclear matter
Unable to display preview. Download preview PDF.
- 18.P. Bożek, P. Czerski, Acta. Phys. Pol. B 34, 2759 (2003).Google Scholar
- 24.T. Frick, PhD Thesis, Tübingen University, (2004), unpublished.Google Scholar
- 31.C. Mahaux, R. Sartor, Adv. Nucl. Phys. 20, 1 (1991).Google Scholar
- 32.R. Machleidt, F. Sammarruca, Y. Song, Phys. Rev. C 53, R1483 (1996).Google Scholar
- 33.R. Machleidt, Adv. Nucl. Phys. 19, 189 (1989).Google Scholar