Lambda-Nucleon and Sigma-Nucleon interactions from lattice QCD with physical masses

Abstract

We present our recent study on baryon-baryon ($BB$) interactions from lattice QCD 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 fm)${}^4$. In order to perform a comprehensive study of $BB$ interactions based on lattice QCD calculation with almost physical masses and to make better use of such large scale computer resources, a large number of $BB$ interactions from $NN$ to $\Xi \Xi$ are calculated simultaneously. In this report, we focus on the strangeness $S=-1$ channels of the hyperon interactions by means of HAL QCD method. The coupled-channel HAL QCD method is briefly outlined. The snapshots of central and tensor potentials in ${}^1{S}_0$ and ${}^3{S}_1{-}^3{D}_1$ channels are presented for $\Lambda N$, $\Sigma N$ (both the isospin $I=1/2,3/2$) and their coupled-channel systems.

Talk presented at the 34th annual International Symposium on Lattice Field Theory (LATTICE 2016), 24-30 July 2016, University of Southampton, UK, 7 pages, 13 figures

References in corpus (1)

• A Massive Pulsar in a Compact Relativistic Binary