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Phase Diagram of the Proton-Neutron Interacting Boson Model

arXiv:nucl-th/0410047 · doi:10.1103/PhysRevLett.93.212501

Abstract

We study the phase diagram of the proton--neutron interacting boson model (IBM--2) with special emphasis on the phase transitions leading to triaxial phases. The existence of a new critical point between spherical and triaxial shapes is reported.

Accepted in PRL. 4 pages, 5 figures