Nuclear Many-Body Theory

A nucleus is a quantum many-body system consisting of two types of fermions, neutrons and protons, called nucleons, which are self-bound by a strong nuclear force. The number of constituent nucleons ranges from a few to a few hundred. Although the number is not very large, the nuclei exhibit various collective behaviors. Surprisingly, it is well established that the concept of single-particle motion in a mean field holds in nuclear structures despite the strong interaction between nucleons. The potential is collectively generated by all nucleons constituting the nucleus. The single-particle picture of the shell model, like electrons in an atom, emerges as a result of the collective effects of all nucleons generating the self-consistent mean field. In addition, some nuclei show a pattern of vibrational or rotational excitations as a whole, and some exhibit characteristic features of superfluids. We develop computational approaches based on quantum many-body theories to comprehensively delineate the intricate collective behaviors exhibited by nuclei. We welcome you to join us to explore the world of quantum nuclear systems.

• Our paper was accepted for publication in PRC. (27 Sep. 2023)

"Nuclear mass table in density functional approach inspired by neutron-star observations", arXiv:2304.01546.

• Our paper was selected as the PRC Editors' Suggestion. (22 Sep. 2023)

"Analysis of a Skyrme energy density functional with deep learning", PRC108, 034311 (2023).

• Our paper was selected as the PTEP Editors' Choice. (30 Aug. 2023)

"Electron wave functions in beta-decay formulas revisited (II): Completion including recoil-order and induced currents", PTEP2023.073D02.

• Our paper was accepted for publication in PRC. (14 Aug. 2023)

"β-decay half-lives as an indicator of shape-phase transition in neutron-rich Zr isotopes with particle-vibration coupling effect", arXiv:2307.00817.

• Our paper was accepted for publication in PRC (10 Aug. 2023)

"Analysis of a Skyrme energy density functional with deep learning", arXiv:2306.11314.

• Our paper was accepted for publication in PRC. (12 Jul. 2023)

"Triaxial-shape dynamics in the low-lying excited 0+ state: Role of the collective mass", arXiv:2304.11918.

• Our paper was accepted for publication in PTEP. (27 Jun. 2023)

"Electron wave functions in beta-decay formulas revisited (II): Completion including recoil-order and induced currents", arXiv:2303.08332.