title: Novel features of nuclear forces and shell evolution in exotic nuclei.
abstract: Novel simple properties of the monopole component of effective nucleon-nucleon interactions are presented, leading to the so-called monopole-based universal interaction. Shell structures are shown to change as functions of N and Z, consistent with experiments. Some key cases of this shell evolution are discussed, clarifying the effects of central and tensor forces. The validity of the present tensor force is examined in terms of the low-momentum interaction V(lowk) and the Q(box) formalism.
authors.affiliation: Department of Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Takaharu
authors.initials: T
authors.lastname: Otsuka
authors.forename: Toshio
authors.initials: T
authors.lastname: Suzuki
authors.forename: Michio
authors.initials: M
authors.lastname: Honma
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Utsuno
authors.forename: Naofumi
authors.initials: N
authors.lastname: Tsunoda
authors.forename: Koshiroh
authors.initials: K
authors.lastname: Tsukiyama
authors.forename: Morten
authors.initials: M
authors.lastname: Hjorth-Jensen