所属：RCNP Osaka University

概要：Comprehensive study of generalized baryon-baryon interaction including strangeness is one of the important subject of nuclear physics. In order to obtain a complete set of isospin-base baryon interactions, we perform a large scale lattice QCD calculation with almost physical quark masses corresponding to $(m_{\pi}, m_{K})\approx(146,525)$~MeV and large volume $(La)^4=(96a)^4\approx(8.1~{\rm fm})^4$. A large number of Nambu-Bethe-Salpeter correlation functions from nucleon-nucleon to $\Xi\Xi$ are calculated simultaneously. For the moment, we focus on the strangeness S=-1 channels of the hyperon interactions by means of HAL QCD method. Strong repulsive forces are found in Sigma-Nucleon systems.

論文掲載,発表実績:
（国際会議会議録掲載論文）

• H. Nemura, "Hyperon-Nucleon Interaction from Lattice QCD at (mπ,mK)≈(146,525) MeV", AIP Conf. Proc. 2130, no. 1, 040005 (2019) [doi:10.1063/1.5118402].

（国内研究会等発表論文）

• H. Nemura, (for HAL QCD Collaboration), “Hyperon-Nucleon interaction from lattice quantum chromodynamics at almost physical masses”, Frontiers in Lattice QCD and related topics, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan, April 15-26, 2019.