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Dilute atomic Bose-Einstein Condensates

The successful generation of trapped atomic Bose-Einstein condensates (BECs) has opened a new domain of AMO science. Many exciting new phenomena continue to emerge and regularly reported. We studied the elementary excitations in view of the collective modes in Bose-Einstein Condensates with the hyperspherical coordinate method in collaborations. We also developed an accurate and efficient numerical code to simulate 2- and 3-dimensional BEC by solving nonlinear time dependent Shrodinger equations (Gross-Pitaevski equation) with DVR (Discrete Variable Representation) and analyzed a quantum gyroscopic effect in the rotational frame. We also investigated several mechanisms of vortex creation during splitting of a spinor BEC in a magnetic double-well trap controlled by a pair of current carrying wires and bias magnetic fields.

References

gAspects of hyperspherical adiabaticity in an atomic-gas Bose-Einstein condensationh

D. Kushibe, M. Mutou, __T. Morishita__, S. Watanabe, and M.
Matsuzawa,

Phys. Rev. A 70, 063617 (2004)

gGyroscopic
effects in interference of matter waveh,

O.I. Tolstikhin, __T. Morishita__, S.Watanabe,

Phys. Rev. A 72, 051603(R) (2005) (4 pages)

gVortex
creation during magnetic trap manipulations of spinor Bose-Einstein
condensatesh

A. P. Itin, __T. Morishita__, M. Satoh, O. I. Tolstikhin, and S.
Watanabe,

Phys. Rev. A 73, 063615 (2006)

gReexamination of dynamical stabilization of matter-wave solitonsh

A. Itin, S. Watanabe, and __T. Morishita__,

Phys. Rev. A 74, 033613 (2006) (12 pages)

Toru Morishita, UEC