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在同位旋相关的Brueckner理论框架内,研究了三体核力重排贡献对同位旋对称势及其动量相关性和密度依赖性的影响,特别是研究了三体核力重排效应对于非对称核物质中质子和中子有效质量同位旋劈裂的影响.结果表明:三体核力重排效应对质子和中子单核子势均具有排斥性,而且其贡献随动量和密度增加而迅速增大.在低密度区域,三体核力重排贡献对同位旋对称势的影响相当小,然而随着密度的升高,三体核力重排效应的贡献显著增强.在高密度区域,三体核力重排效应使得同位旋对称势明显增大,而且当密度足够高时,三体核力重排贡献甚至导致对称势的动量相关性质发生改变.三体核力的重排效应对核子有效质量同位旋依赖性的影响是使高密度丰中子核物质中质子-中子有效质量同位旋劈裂的幅度显著减小.
In the framework of isospin-related Brueckner theory, the influence of the rearrangement contribution of the three-body nuclear force on the isospin symmetry potential and its momentum-dependent and density-dependent effects is studied. In particular, the effect of the rearrangement effect of the three-body nuclear force on the asymmetry The results show that the rearrangement effect of the three-body nuclear force is repulsive to proton and neutron mononuclear potential, and its contribution increases rapidly with the momentum and density In the low-density region, the contribution of triplet nuclear rearrangement contribution to the isospin symmetry potential is quite small, but with the increase of density, the contribution of triplet nuclear rearrangement effect is significantly enhanced.In the high-density region, Three-body nuclear rearrangement effect makes the isospin symmetry significantly increased, and when the density is high enough, the contribution of three-body nuclear rearrangement and even the momentum-related nature of the symmetrical potential changes in nature. The effect of the effective mass isospin dependence of the nuclei is that the magnitudes of proton neutron effective mass isospin splitting in high density neutron rich matter are significantly reduced.