Dynamics of collapsing and exploding Bose-Einstein condensed vortex state

Details Dynamics of collapsing and exploding Bose-Einstein condensed vortex state Dynamics of collapsing and exploding Bose-Einstein condensed vortex state

2002-04-30

arxiv.org/abs/cond-mat/0204638v2

Phys.Rev.A 66 (2002) 043601 (1-7)

Physics

Condensed Matter

Soft Condensed Matter

8 REVTEX4 pages, 8 EPS figures, final version accepted in Phys. Rev. A after minor changes

Scientific paper

10.1103/PhysRevA.66.043601

Using the time-dependent mean-field Gross-Pitaevskii equation we study the dynamics of small repulsive Bose-Einstein condensed vortex states of ^{85}Rb atoms in a cylindrical trap with low angular momentum hbar L per atom (L <= 6), when the atomic interaction is suddenly turned attractive by manipulating the external magnetic field near a Feshbach resonance. Consequently, the condensate collapses and ejects atoms via explosion and a remnant condensate with a smaller number of atoms emerges that survives for a long time. Detail of this collapse and explosion is compared critically with a similar experiment performed with zero angular momentum (L=0). Suggestion for future experiment with vortex state is made.

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