title: Quantum phase transition for gamma-soft nuclei.
abstract: We examine a quantum phase transition in gamma-soft nuclei, where the O(6) limit is simultaneously a dynamical symmetry of the U(6) group of the interacting boson model and a critical point of a prolate-oblate phase transition. This is the only example of phase transitional behavior that can be described analytically for a finite s,d boson system.
authors.affiliation: Institute of Nuclear Physics, University of Cologne, Zülpicherstrasse 77, D-50937 Cologne, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Jolie
authors.forename: R F
authors.initials: RF
authors.lastname: Casten
authors.forename: P
authors.initials: P
authors.lastname: von Brentano
authors.forename: V
authors.initials: V
authors.lastname: Werner