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在Brueckner Hartree Fock理论框架内 ,研究了自旋极化核物质的状态方程及其自旋依赖性 ,计算了相关的物理量如朗道参数G0 和G′0 ,并着重讨论了三体核力的影响 .结果表明 :在整个自旋极化度范围内 ,自旋极化核物质的每核子能量随中子和质子自旋极化度的变化相当精确地满足二次方规律 ,而且在Brueckner Hartree Fock理论框架内 ,自旋非极化核物质的能量总是比相应的自旋极化核物质的能量低 ,这表明核物质中不会发生由自旋非极化态向自旋极化态的自发相变 .当密度较低时 ,三体核力对核物质状态方程的自旋依赖性的影响不明显 ;随着密度的增大 ,三体核力效应增强 ,而且三体核力使朗道参数G0 和G′0 增大 ,从而使核物质对于自旋涨落的稳定性增强
In the framework of the Brueckner Hartree Fock theory, the state equation of spin-polarized nuclear matter and its spin dependence are studied, and related physical quantities such as Landau parameters G0 and G’0 are calculated, and the three-body nuclear force .The results show that the energy per nucleon of the spin-polarized nuclear material satisfies the quadratic law with the changes of the polarizations of the neutron and proton spins over the entire range of spin polarizabilities, and the Brueckner Hartree In the Fock theoretical framework, the energy of spin-unpolarized nuclear matter is always lower than that of the corresponding spin-polarized nuclear matter, indicating that there will be no transition from spin-unpolarized state to spin-polarized state When the density is low, the influence of the three-body nuclear force on the spin dependence of the nuclear matter equation of state is insignificant; as the density increases, the nuclear force effect of the three bodies increases, and the three-body nuclear force Landau’s parameters G0 and G’0 increase so that the stability of the nuclear species to spin fluctuations increases