title: Dynamics of quasicollapse in nonlinear Schrodinger systems with nonlocal interactions
abstract: We study the effect of nonlocality on some dynamical properties of a self-focusing nonlocal nonlinear Schrodinger system. Using a combination of moment techniques, time dependent variational methods, and numerical simulations, we present evidence in support of the hypothesis that nonlocal attractively interacting condensates cannot collapse under very general forms of the interaction. Instead there appear oscillations of the wave packet with a localized component whose size is of the order of the range of interactions. We discuss the implications of the results to collapse phenomena in Bose-Einstein condensates.
authors.affiliation: Departamento de Matematicas, Escuela Tecnica Superior de Ingenieros Industriales, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain.
authors.initials: VM
authors.lastname: Perez-Garcia
authors.initials: VV
authors.lastname: Konotop
authors.initials: JJ
authors.lastname: Garcia-Ripoll