Abstract
The nucleon-nucleon () potential is studied by lattice QCD simulations in the quenched approximation, using the plaquette gauge action and the Wilson quark action on a [] lattice. A potential is defined from the equal-time Bethe-Salpeter amplitude with a local interpolating operator for the nucleon. By studying the interaction in the and channels, we show that the central part of has a strong repulsive core of a few hundred MeV at short distances () surrounded by an attractive well at medium and long distances. These features are consistent with the known phenomenological features of the nuclear force.
- Received 28 November 2006
DOI:https://doi.org/10.1103/PhysRevLett.99.022001
©2007 American Physical Society