Beyond-mean-field dynamical correlations for nuclear mass table in deformed relativistic Hartree-Bogoliubov theory in continuum  

作　　者：Wei Sun Kai-Yuan Zhang Cong Pan Xiao-Hua Fan Shuang-Quan Zhang Zhi-Pan Li 孙玮;张开元;潘琮;范小华;张双全;李志攀(School of Physical Science and Technology,Southwest University,Chongqing 400715,China;State Key Laboratory of Nuclear Physics and Technology,School of Physics,Peking University,Beijing 100871,China)

机构地区：[1]School of Physical Science and Technology,Southwest University,Chongqing 400715,China [2]State Key Laboratory of Nuclear Physics and Technology,School of Physics,Peking University,Beijing 100871,China

出　　处：《Chinese Physics C》2022年第6期154-163,共10页中国物理C（英文版）

基　　金：Supported by the National Natural Science Foundation of China(11875225,12005175,11935003,11875075,11975031,12070131001,11790325);the Fundamental Research Funds for the Central Universities;the National Key R&D Program of China(2017YFE0116700,2018YFA0404400);the State Key Laboratory of Nuclear Physics and Technology,Peking University(NPT2020ZZ01);the Fok Ying-Tong Education Foundation。

摘　　要：We extend the deformed relativistic Hartree-Bogoliubov theory in continuum(DRHBc)to go beyondmean-field framework by performing a two-dimensional collective Hamiltonian.The influences of dynamical correlations on the ground-state properties are examined in different mass regions,picking Se,Nd,and Th isotopic chains as representatives.It is found that the dynamical correlation energies(DCEs)and the rotational correction energies E_(rot) in the cranking approximation have an almost equivalent effect on the description of binding energies for most deformed nuclei,and the DCEs can provide a significant improvement for the(near)spherical nuclei close to the neutron shells and thus reduce the rms deviations of S_(2n) by≈17%.Furthermore,it is found that the DCEs are quite sensitive to the pairing correlations;taking ^(148)Nd as an example,a 10%enhancement of pairing strength can raise the DCE by≈37%.

关 键 词：mass table covariant density functional theory dynamical correlation energy collective Hamiltonian 

分 类 号：O571[理学—粒子物理与原子核物理]