Relativistic Brueckner-Hartree-Fock theory for neutron drops

Shen, Shihang ; Liang, Haozhao ; Meng, Jie ; Ring, Peter ; Zhang, Shuangquan (2018)

CITATION: Shen, S., et al. 2018. Relativistic Brueckner-Hartree-Fock theory for neutron drops. Physical Review C, 97(5):054312, doi:10.1103/PhysRevC.97.054312.

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Neutron drops confined in an external field are studied in the framework of relativistic Brueckner-Hartree-Fock theory using the bare nucleon-nucleon interaction. The ground-state energies and radii of neutron drops with even numbers from N=4 to N=50 are calculated and compared with results obtained from other nonrelativistic ab initio calculations and from relativistic density functional theory. Special attention has been paid to the magic numbers and to the subshell closures. The single-particle energies are investigated and the monopole effect of the tensor force on the evolutions of the spin-orbit and the pseudospin-orbit splittings is discussed. The results provide interesting insights into neutron-rich systems and can form an important guide for future density functionals.

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