Compacton matter waves induced by time-dependent interactions.

Salerno M.
  Lunedì 11/09   14:30 - 18:30   Aula A224   II - Fisica della materia
Compacton matter waves in Bose-Einstein condensates (BEC) trapped in deep optical lattices in the presence of strong and rapid periodic time modulations of the atomic scattering length are discussed. Contrary to ordinary solitons, the amplitude of a compacton reduces exactly to zero outside the localizing domain, this implying the total suppression of the inter-well tunneling at the compacton edges. The existence of such excitations will be demonstrated for ordinary BEC in one- and two-dimensional settings and for binary BEC mixtures.