出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present our updated results of the nucleon-nucleon potential in quenched lattice QCD simulations
with the plaquette gauge action and theWilson quark action on the 324(≃ (4.4fm)4) lattice.
From the equal-time Bethe-Salpeter (BS) wave function, the NN potential is constructed through
the Schrödinger-type equation. Resulting NN potential has all the qualitative features which phenomenological
potentials commonly have: the repulsive core at short distance and the attractive
well at medium and long distances. In the L → ¥ limit, our NN potential is guaranteed to reproduce
the scattering length obtained from the Lüscher’s formula. The quark mass dependence
of the NN potential is studied with mp ∼ 380,529,731 MeV. The results suggest that both the
repulsive core at short distance and the attractive well at medium distance are enhanced in the
light quark mass region.
