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 condensationh
D. Kushibe, M. Mutou, T. Morishita, S. Watanabe, and M. Matsuzawa,
Phys. Rev. A 70, 063617 (2004)
gGyroscopic effects in interference of matter waveh,
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 condensatesh
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 solitonsh
A. Itin, S. Watanabe, and T. Morishita,
Phys. Rev. A 74, 033613 (2006) (12 pages)



Toru Morishita, UEC