Journal
PHYSICS LETTERS B
Volume 712, Issue 4-5, Pages 437-441Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2012.04.076
Keywords
Nuclear force; Lattice QCD; Hadron interaction; Scattering phase shift
Funding
- JSPS [21.5985, 2004:20105001, 20105003, 23540321]
- SPIRE (Strategic Program for Innovative Research)
- Grants-in-Aid for Scientific Research [20105001, 23540321, 24740146, 20105003] Funding Source: KAKEN
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Imaginary-time Nambu-Bethe-Salpeter (NBS) wave function is introduced to extend our previous approach for hadron-hadron interactions on the lattice. Scattering states of hadrons with different energies encoded in the NBS wave function are utilized to extract non-local hadron-hadron potential. The ground state saturation, which is commonly used in lattice QCD but is hard to be achieved for multi-baryons, is not required. We demonstrate that the present method works efficiently for the nucleon-nucleon interaction (the potential and the phase shift) in the S-1(0) channel. (C) 2012 Elsevier B.V. All rights reserved.
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