1306.6387 (Ilya G. Ryabinkin et al.)

Geometric phase effects in dynamics near conical intersections: Symmetry
breaking and spatial localization    [PDF]

Ilya G. Ryabinkin, Artur F. Izmaylov

We show that finite systems with conical intersections can exhibit spontaneous symmetry breaking which manifests itself in spatial localization of eigenstates. This localization has a geometric phase origin and is robust against variation of model parameters. The transition between localized and delocalized eigenstate regimes resembles a continuous phase transition. The localization slows down the low-energy quantum nuclear dynamics at zero and low temperatures.

View original: http://arxiv.org/abs/1306.6387