Tensor-force effects on nuclear matter in relativistic ab initio theory

• DOI: 10.1016/j.scib.2024.05.013
• Publication Date: 2024-05-20T16:27:29Z
• Authors: Sibo Wang; Hui Tong; Chencan Wang; Qiang Zhao; Peter Ring; Jie Meng
• Keywords: Nuclear force

Within the relativistic Brueckner-Hartree-Fock theory in full Dirac space, tensor-force effects on infinite nuclear matter are elucidated by subtracting matrix elements of tensor forces from realistic nucleon-nucleon interaction. The for binding energy per particle symmetric (SNM) as well symmetry attractive and more pronounced around empirical saturation density, while have little impact pure neutron matter. By tuning strength, an (negative) scattering length spin-triplet channel is found. This locates dilute SNM with only $^3S_1$-$^3D_1$ interaction at unitary limit. Its ground-state found proportional to a free Fermi gas scaling factor 0.38, revealing good universal properties. work paves way study stars finite nuclei interactions, highlights role force deviation physics limit, provides valuable reference studies four-component gas.