Nuclear Force from Lattice QCD

Journal Article · Fri Jul 13 04:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.022001· OSTI ID:20957871

Ishii, N ^[1]; Aoki, S ^[2]; Hatsuda, T ^[3]

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1. Center for Computational Sciences, University of Tsukuba, Tsukuba 305-8577, Ibaraki (Japan)
2. Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8571, Ibaraki (Japan)
3. Department of Physics, University of Tokyo, Tokyo 113-0033 (Japan)

The nucleon-nucleon (NN) potential is studied by lattice QCD simulations in the quenched approximation, using the plaquette gauge action and the Wilson quark action on a 32{sup 4} [{approx_equal}(4.4 fm){sup 4}] lattice. A NN potential V{sub NN}(r) is defined from the equal-time Bethe-Salpeter amplitude with a local interpolating operator for the nucleon. By studying the NN interaction in the {sup 1}S{sub 0} and {sup 3}S{sub 1} channels, we show that the central part of V{sub NN}(r) has a strong repulsive core of a few hundred MeV at short distances (r < or approx. 0.5 fm) surrounded by an attractive well at medium and long distances. These features are consistent with the known phenomenological features of the nuclear force.

• OSTI ID: 20957871
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 99; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
APPROXIMATIONS
BETHE-SALPETER EQUATION
COMPUTERIZED SIMULATION
MEV RANGE 100-1000
NUCLEAR FORCES
NUCLEON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
NUCLEONS
QUANTUM CHROMODYNAMICS
QUARKS