出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We explore three-nucleon forces (3NF) from lattice QCD simulations. Utilizing the Nambu- Bethe-Salpeter (NBS) wave function, two-nucleon forces (2NF) and 3NF are determined on the same footing. Quantum numbers of the three-nucleon (3N) system are chosen to be (I;JP) = (1=2;1=2+) (the triton channel). The enormous computational cost is reduced by employing the simplest geometrical configuration, where 3N are aligned linearly with an equal spacing. We perform lattice QCD simulations using Nf =2 dynamical clover fermion configurations generated by CP-PACS Collaboration, at the lattice spacing of a=0:156 fm on a 16332 lattice with a large quark mass corresponding to mp = 1:13 GeV. Repulsive 3NF is found at short distance.
