Short range correlations in relativistic nuclear matter models

Details Short range correlations in relativistic nuclear matter models Short range correlations in relativistic nuclear matter models

2006-02-21

arxiv.org/abs/nucl-th/0602059v1

Phys.Rev.C73:035805,2006

Physics

Nuclear Physics

Nuclear Theory

8pages, 4 figures

Scientific paper

10.1103/PhysRevC.73.035805

Short range correlations are introduced using unitary correlation method in a relativistic approach to the equation of state of the infinite nuclear matter in the framework of the Hartree-Fock approximation. It is shown that the correlations give rise to an extra node in the ground-state wave-function in the nucleons, contrary to what happens in non-relativistic calculations with a hard core. The effect of the correlations in the ground state properties of the nuclear matter and neutron matter is studied. The nucleon effective mass and equation of state (EOS) are very sensitive to short range correlations. In particular, if the pion contact term is neglected a softening of the EOS is predicted. Correlations have also an important effect on the neutron matter EOS which presents no binding but only a very shallow minimum contrary to the Walecka model.

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