Nuclear Matter and Finite Nuclei: Recent Studies Based on Parity Doublet Model

被引：0

作者：

Kong, Yuk-Kei ^{[1
]}

Kim, Youngman ^{[2
]}

Harada, Masayasu ^{[1
,3
,4
]}

机构：

[1] Nagoya Univ, Dept Phys, Nagoya 4648602, Japan

[2] Inst for Basic Sci Korea, Ctr Exot Nucl Studies, Daejeon 34126, South Korea

[3] Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Universe, Nagoya 4648602, Japan

[4] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai 3191195, Japan

来源：

SYMMETRY-BASEL | 2024年 / 16卷 / 09期

关键词：

parity doublet model; chiral invariant mass; isovector scalar meson; finite nuclei; nuclear matter; symmetry energy; NEUTRON-STARS; GAUGE BOSON; SYMMETRY;

D O I：

10.3390/sym16091238

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In this review, we summarize recent studies on nuclear matter and finite nuclei based on parity doublet models. We first construct a parity doublet model (PDM), which includes the chiral invariant mass m0 of nucleons together with the mass generated by the spontaneous chiral symmetry breaking. We then study the density dependence of the symmetry energy in the PDM, which shows that the symmetry energy is larger for smaller chiral inavariant mass. Then, we investigate some finite nuclei by applying the Relativistic Continuum Hartree-Bogoliubov (RCHB) theory to the PDM. We present the root-mean-square deviation (RMSD) of the binding energies and charge radii, and show that m0=700 MeV is preferred by the nuclear properties. Finally, we modify the PDM by adding the isovector scalar meson a0(980), and show that the inclusion of the a0(980) enlarges the symmetry energy of the infinite nuclear matter.

引用

页数：33