Baryon interactions from lattice QCD with physical quark masses -- Nuclear forces and $\Xi \Xi$ forces --

Abstract

We present the latest lattice QCD results for baryon interactions obtained at nearly physical quark masses. $N_f=2+1$ nonperturbatively $\mathcal{O}(a)$-improved Wilson quark action with stout smearing and Iwasaki gauge action are employed on the lattice of $(96a)^4 \simeq (8.1\mbox{fm})^4$ with $a^{-1}\simeq 2.3$ GeV, where $m_{\pi }\simeq 146$ MeV and $m_K\simeq 525$ MeV. In this report, we study the two-nucleon systems and two-$\Xi$ systems in ${}^1{S}_0$ channel and ${}^3{S}_1$-${}^3{D}_1$ coupled channel, and extract central and tensor interactions by the HAL QCD method. We also present the results for the $N\Omega$ interaction in ${}^5{S}_2$ channel which is relevant to the $N\Omega$ pair-momentum correlation in heavy-ion collision experiments.

Talk given at 35th International Symposium on Lattice Field Theory (Lattice 2017), Granada, Spain, 18-24 Jun 2017, 8 pages, 9 figures. arXiv admin note: text overlap with arXiv:1702.01600

References in corpus (6)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Multi-messenger Observations of a Binary Neutron Star Merger
• Nuclear Force from Lattice QCD
• Spin-2 $N\Omega$ Dibaryon from Lattice QCD
• Unified contraction algorithm for multi-baryon correlators on the lattice
• Do $\Xi \Xi$ bound states exist?

Cited by in corpus (19)

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• Low-energy Scattering and Effective Interactions of Two Baryons at $m_{\pi }\sim 450$ MeV from Lattice Quantum Chromodynamics
• $N\Omega$ interaction: meson exchanges, inelastic channels, and quasibound state
• Strangeness $S=-1$ hyperon-nucleon interactions: chiral effective field theory vs. lattice QCD
• Strangeness $S=-2$ baryon-baryon interactions and femtoscopic correlation functions in covariant chiral effective field theory
• Lambda-nucleon scattering in baryon chiral perturbation theory
• Test of the hyperon-nucleon interaction within leading order covariant chiral effective field theory
• $\Omega NN$ and $\Omega \Omega N$ states
• Phase Unwrapping and One-Dimensional Sign Problems
• Strangeness $S=-3$ and $-4$ baryon-baryon interactions in relativistic chiral effective field theory
• Strange Nuclear Physics from QCD on Lattice
• $\Omega d$ bound state
• Measurements of $p$-$\Xi$, $\Lambda$-$\Lambda$, and $\Xi$-$\Xi$ Correlation in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV at RHIC-STAR
• Lattice QCD and Baryon-Baryon Interactions
• Femtoscopic study of the $\Omega \alpha$ interaction in heavy-ion collisions
• S-wave kaon-nucleon potentials with all-to-all propagators in the HAL QCD method
• Hyperon-Nucleon Interaction from Lattice QCD at $(m_{\pi },m_K)\approx (146,525)$ MeV