Neutron matter properties from relativistic Brueckner-Hartree-Fock theory in the full Dirac space

被引：10

作者：

Qu, Xiaoying ^{[1
]}

Tong, Hui ^{[2
,3
]}

Wang, Chencan ^{[4
]}

Wang, Sibo ^{[5
]}

机构：

[1] Guizhou Minzu Univ, Sch Mechatron Engn, Guiyang 550025, Peoples R China

[2] Tianjin Normal Univ, Coll Phys & Mat Sci, Tianjin 300387, Peoples R China

[3] RIKEN, Strangeness Nucl Phys Lab, Nishina Ctr, Wako 3510198, Japan

[4] Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China

[5] Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China

来源：

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2023年 / 66卷 / 04期

基金：

中国国家自然科学基金;

关键词：

neutron matter properties; relativistic Brueckner-Hartree-Fock; full Dirac space; NUCLEON SELF-ENERGY; EQUATION-OF-STATE; GEOMETRIC MEASUREMENTS; STARS; MASS;

D O I：

10.1007/s11433-022-2048-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel description of the strongly interacting pure neutron matter (PNM) was carried out by the relativistic Brueckner-Hartree-Fock (RBHF) theory in the full Dirac space with Bonn A potential. The scalar and vector components of the single-particle potentials are shown as functions of the momentum and the density, and are compared with the results obtained by the RBHF calculations in the Dirac space without negative-energy states. By benchmarking the binding energies of PNM to those predicted by several ab initio methods in the nonrelativistic framework with two- and three-body forces, we find our results are softer than those from the Brueckner-Hartree-Fock theory with the inclusion of three-body force, and in harmony with the ones obtained by the Monte Carlo method and many-body perturbation theory within uncertainties. In addition, the equation of state for neutron star matter is consistent with the constraints from multi-messenger astrophysical observation and heavy-ion collision experiments. The tidal deformabilities of a binary neutron star system are calculated and found consistent with the constraints from GW170817.

引用

页数：8