title: Incoherent matter-wave solitons and pairing instability in an attractively interacting Bose-Einstein condensate.
abstract: The dynamics of matter-wave solitons in Bose-Einstein condensates (BEC) is considerably affected by the presence of a thermal cloud and the dynamical depletion of the condensate. Our numerical results, based on the time-dependent Hartree-Fock-Bogoliubov theory, demonstrate the collapse of the attractively interacting BEC via collisional emission of atom pairs into the thermal cloud, which splits the (quasi-one-dimensional) BEC soliton into two partially coherent solitonic structures of opposite momenta. These incoherent matter waves are analogous to optical random-phase solitons.
authors.affiliation: Physics Department, Technion-Israel Institute of Technology, Haifa 32000, Israel.
authors.forename: H
authors.initials: H
authors.lastname: Buljan
authors.forename: M
authors.initials: M
authors.lastname: Segev
authors.forename: A
authors.initials: A
authors.lastname: Vardi