Abstract
The microscopic and bulk properties of nuclear matter at zero and finite temperatures are studied in the frame of the Brueckner theory. The results for the symmetry energy are also obtained using different potentials. The calculations are based on realistic nucleon-nucleon interactions which reproduce the nucleon-nucleon phase shifts. These microscopic approaches are supplemented by a density-dependent contact interaction to achieve the empirical saturation property of symmetric nuclear matter. Special attention is paid to behavior of the effective mass in asymmetric nuclear matter. The nuclear symmetry potential at fixed nuclear density is also calculated and its value decreases with increasing the nucleon energy. The hot properties of nuclear matter are also calculated using T2-approximation at low temperatures. Good agreement is obtained in comparison with previous works around the saturation point.
Highlights
It is found that our calculations lead to results for saturation points, which lie along a line (Coester line) shifted with respect to the phenomenological saturation point (ρ0 = 0.16 fm−3; EA = -16MeV )
We have investigated the effect of different modern nucleon-nucleon potentials on the Equation of State (EoS), i.e., the nuclear matter binding energy per nucleon, within BHF approach
It is found that our calculations lead to results, which lie along a line (Coester line) shifted with respect to the phenomenological saturation point ( ρ0 0.16fm−3, EA −16MeV )
Summary
In order to establish the importance of the hh term in the calculation of EoS for asymmetric nuclear matter our aim is to extend the BHF approach which ignores the hh term to SCGF approach, which includes the hh term
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