Coupled Bose-Einstein condensate: Collapse for attractive interaction - art. no. 043611

We study the collapse in a coupled Bose-Einstein condensate of two types of bosons 1 and 2 under the action of a trap using the time-dependent Gross-P itaevskii equation. The system may undergo collapse when one, two, or three of the scattering lengths a(ij) for scattering of boson i with j,i,j = 1,2 , are negative representing an attractive interaction. Depending on the par ameters of the problem a single or both components of the condensate may ex perience collapse.