Seminario di Fisica Matematica: Qualitative features of the rearrangement of molecular energy spectra from a "wall-crossing" perspective

Lunedì 25 Novembre 2013, ore 15:30 - Aula 2BC30 - Boris Zhilinskii

ARGOMENTI: Seminari

SEMINARIO DI FISICA MATEMATICA
Lunedì 25 Novembre 2013, alle ore 15:30, in aula 2BC30, Boris Zhilinskii (Universitè du Littoral Cote d'Opale, Dunkerque, Francia) terrà un seminario dal titolo 'Qualitative features of the rearrangement of molecular energy spectra from a "wall-crossing" perspective'.

Abstract
Qualitatively different systems of molecular energy bands are studied on example of a parametric family of effective Hamiltonians describing rotational structure of triply degenerate vibrational state of a cubic symmetry molecule. The modification of band structure under variation of control parameters is associated with a topological invariant "delta-Chern". This invariant is evaluated by using a local
Hamiltonian for the control parameter values assigned at the boundary between adjacent parameter domains which correspond to qualitatively different band structures.