Exploring effects of tensor force and its strength via neutron drops  

作　　者：Zhiheng Wang Tomoya Naito Haozhao Liang Wen Hui Long 王之恒;Tomoya Naito;梁豪兆;龙文辉(School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;Department of Physics,Graduate School of Science,The University of Tokyo,Tokyo 113-0033,Japan;RIKEN Nishina Center,Wako 351-0198,Japan;Joint Department for Nuclear Physics,Lanzhou University and Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China)

机构地区：[1]School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China [2]Department of Physics,Graduate School of Science,The University of Tokyo,Tokyo 113-0033,Japan [3]RIKEN Nishina Center,Wako 351-0198,Japan [4]Joint Department for Nuclear Physics,Lanzhou University and Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China

出　　处：《Chinese Physics C》2021年第6期149-157,共9页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11905088,11675065,12075104);the Strategic Priority Research Program of Chinese Academy of Sciences(XDB34000000);JSPS Grant-in-Aid for Early-Career Scientists(18K13549);JSPS Grant-in-Aid for JSPS Fellows(19J20543);JSPS Grant-in-Aid for Scientific Research(S)(20H05648)。

摘　　要：The tensor-force effects on the evolution of spin-orbit spittings in neutron drops are investigated within the framework of the relativistic Hartree-Fock theory.For a fair comparison on the pure mean-field level,the results of the relativistic Brueckner-Hartree-Fock calculation with the Bonn A interaction are adopted as meta-data.Through a quantitative analysis,we certify that theπ-pscudovector(π-PV)coupling affects the evolutionary trend through the embedded tensor force.The strength of the tensor force is explored by enlarging the strength fr of theπ-PV coupling.It is found that weakening the density dependence of fn is slightly better than enlarging it with a factor.We thus provide a semiquantitative support for the renormalization persistency of the tensor force within the frame-work of density functional theory.This will serve as important guidance for further development of relativistic effective interactions with particular focus on the tensor force.

关 键 词：tensor force relativistic Hartree-Fock theory neutron drop tensor renormalization persistency 

分 类 号：O571.5[理学—粒子物理与原子核物理]