Evolution of spectral properties along the O(6)-U(5) transition in the interacting boson model. I. Level dynamics
Evolution of spectral properties along the O(6)-U(5) transition in the interacting boson model. I. Level dynamics
We investigate the evolution of quantal spectra and the corresponding wave functions along the [O(6)-U(5)] \ensuremath{\supset} O(5) transition of the interacting boson model. The model is integrable in this regime, and its ground state passes through a second-order structural phase transition. We show that the whole spectrum as a function …