Incoherent matter-wave solitons and pairing instability in an attractively interacting Bose-Einstein condensate.
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.
Buljan
H
H
Physics Department, Technion-Israel Institute of Technology, Haifa 32000, Israel.
Segev
M
M
Vardi
A
A