title: Interaction induced delocalization for two particles in a periodic potential
abstract: We consider two interacting particles evolving in a one-dimensional periodic structure embedded in a magnetic field. We show that the strong localization induced by the magnetic field for particular values of the flux per unit cell is destroyed as soon as the particles interact. We study the spectral and dynamical aspects of this transition.
authors.affiliation: Laboratoire de Physique des Solides, CNRS UMR 8502, Universite Paris Sud, Batiment 510, 91405 Orsay, France.
authors.initials: J
authors.lastname: Vidal
authors.initials: B
authors.lastname: Doucot
authors.initials: R
authors.lastname: Mosseri
authors.initials: P
authors.lastname: Butaud