| Nuclear force is one of the fundamental topics in nuclear physics,while the spin-dependence is an important property of nuclear interaction.Based on the density-dependent relativistic Hartree-Fock theory,the two-body interaction matrix elements for the spin-related component embedded in the Fock terms were derived and decomposed in partial wave helicity states in the isovector-pseudovector?-PV,isoscalar-vector?-V?isovector-tensor?-T?coupling chan-nels,in particular its spin-,momentum-,density-dependence.In detail,the rel-ativistic effect were investigated in the nuclear matter system.It is found that in relativistic case,the spin-related component of?-PV coupling channel mainly acts on the3P1state,while the spin-related component of?-V coupled channel is equally important in the3P1and1S0states.In non-relativistic case,the spin-related components of?-PV and?-V coupling channels are strictly zero in the1S0state.In addition,taking the second-and fourth-order symmetry energies as ex-amples,the influence of spin-related component in effective interaction on the bulk properties of nuclear matter is studied.It is found that the spin-dependent interaction,especially those from the isoscalar meson coupling channels,re-duces?enhances?the density dependence of the second-order?fourth-order?symmetry energy. |
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