Study of Hyperon Superfluidity in Neutron Stars using Lattice QCD

2017 Fiscal Year Final Research Report

• Project/Area Number: 26400281
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Nihon University
• Principal Investigator: INOUE Takashi 日本大学, 生物資源科学部, 教授 (80407353)
• Research Collaborator: SASAKI Kenji
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: ハイペロン / 超流動 / 中性子星 / 量子色力学 / 格子場の理論

Outline of Final Research Achievements

Purpose of this research is revealing whether hyperon superfluidity is realized in the core of neutron stars. Since hyperon interactions are experimentally unknown, first we determine them based on the fundamental theory QCD, and then apply them. In order to study hyperon superfluidity, hyperon single-particle potential is an indispensable quantity.
Within this budget period, I could derive hyperon interaction by doing lattice QCD numerical calculation, and could compute hyperon single-particle potential applying obtained interactions to the Brueckner-Hartree-Fock quantum many-body theory. Depth of the obtained hyperon single-particle potentials qualitatively agree well with the hypernuclear experimental data. This is the first ever success of explaining hypernuclear physics from the fundamental theory QCD, and it is highly appreciated.

Free Research Field

ハドロン物理理論