新学術「中性子星核物質」セミナー 2013-1

  • 日時:7月19日10:30~
  • 場所:京都大学基礎物理学研究所 研究棟・会議室K206
  • 講演者
    Jie Meng(北京大学 教授)

  • タイトル
    新世代の原子核構造に対する相対論的アプローチ
    "New generation of relativistic approach for nuclear structure"

  • 概要
    During the last decades, the covariant density functional theory (CDFT) in Hartree level with either meson exchange or point coupling version including both density-dependent and nonlinear couplings allows a very successful description of nuclear ground state as well as excited state properties all over the nuclear chart. The CDFT in Hartree-Fock level with density-dependent σ, ω, ρ and π meson-nucleon couplings provides not only an equally good description for nuclear properties but also better understanding for the nucleon effective mass and its isospin and energy dependence in nuclear matter. Based on the density-dependent relativistic Hartree-Fock (RHF) approach, a fully self-consistent charge-exchange RPA has been established and the Gamow-Teller excitation energies and their strengths can be reproduced while maintaining g’=1/3 in the contact counter-term.
    With the success of CDFT in both Hartree and Hartree-Fock level and the ab initio calculation for infinite nuclear matter, it is feasible to calculate the finite nuclei with ab initio method in CDFT framework. The ab initio calculation for finite nuclei has been realized with the full Relativistic Brueckner-Hartree-Fock (RBHF) theory through the Harmonics Oscillator (HO) basis expansion method. With the G-matrix of Brueckner theory for Bonn A, the RHF equation has been solved in HO basis. The ab initio description of finite nuclei in CDFT has been realized and good description for doubly magic nuclei including 14C, 16O, 40,48Ca and 56Ni has been achieved.