Incoherent matter-wave solitons and pairing instability in an attracivelly interacting Bose-Einstein condensate (CROSBI ID 122874)
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Buljan, Hrvoje ; Segev, Mordechai ; Vardi, Amichay
engleski
Incoherent matter-wave solitons and pairing instability in an attracivelly 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.
Bose-Einstein condensate; solitons; finite temperature; incoherent matter waves
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