摘要
In 2014, the researchers of Theoretical Physics Group at IMP have carried out their research work on nuclear physics, heavy ion physics and hadron physics. Some important results have been obtained.The three-body force (TBF) effect on the off-shell behavior of the neutron and proton mass operators in asymmetric uclear matter has been investigated within the framework of the extended Brueckner-Hartree-Fock approach[1].At high densities well above the normal nuclear matter density, the TBF is shown to affect significantly the off-shell ehavior of both the proton and neutron mass operators. The density dependence of symmetry energy around the uclear saturation density has been studied[2]. A new approach has been proposed and applied to determine the ymmetry energy coefficient of heavy nuclei based on the available experimental nuclear masses of heavy nuclei.The obtained result is adopted to analyze the density dependence of symmetry energy of nuclear matter around the aturation density. The slope parameter at the saturation density is determined to be L = (50.515.5) MeV.
