Towards Lattice QCD Baryon Forces at the Physical Point: First Results

Abstract

Lattice QCD calculations of baryon forces are performed for the first time with (almost) physical quark masses. $N_f=2+1$ dynamical clover fermion gauge configurations are generated at the lattice spacing of $a\simeq 0.085$ fm on a $(96a{)}^4\simeq (8.2\mathrm{fm}{)}^4$ lattice with quark masses corresponding to $(m_{\pi },m_K)\simeq (146,525)$ MeV. Baryon forces are calculated using the time-dependent HAL QCD method. In this report, we study $\Xi \Xi$ and $NN$ systems both in ${}^1{S}_0$ and ${}^3{S}_1$-${}^3{D}_1$ channels, and the results for the central and tensor forces as well as phase shifts in the $\Xi \Xi$ ${(}^1{S}_0)$ channel are presented.

Talk given at the 12th International Conference on Hypernuclear and Strange Particle Physics (HYP2015), Sendai, Japan, 7-12 Sep 2015, 4 pages, 6 figures

References in corpus (5)

• Do $\Xi \Xi$ bound states exist?
• 2+1 flavor QCD simulation on a $96^4$ lattice
• Multi-block/multi-core SSOR preconditioner for the QCD quark solver for K computer
• First results of baryon interactions from lattice QCD with physical masses (1) -- General overview and two-nucleon forces --
• Lattice QCD studies on baryon interactions from Lüscher's finite volume method and HAL QCD method

Cited by in corpus (3)

• Leading order relativistic hyperon-nucleon interactions in chiral effective field theory
• Strangeness $S=-1$ hyperon-nucleon scattering in covariant chiral effective field theory
• A Fast Algorithm for Lattice Hyperonic Potentials