１９９９年度 東大駒場原子核理論セミナー

FADDEEV APPROACH TO THE NUCLEON AND NUCLEON STRUCTURE FUNCTION

After a review of the results obtained in the relativistic Faddeev approach to the nucleon in the Nambu-Jona-Lasinio (NJL) model, we discuss the spin independent nucleon structure functions obtained by using a simple approximation to the full Faddeev wave function. Pion cloud effects are taken into account, and various sum rules are discussed. We also discuss an attempt to construct a nuclear matter equation of state in the framework of the NJL model, based on the Faddeev (quark-diquark) picture for the single nucleon. The model exhibits an instability, similar to the one encountered in previous sigma-model studies of nuclear matter.