Volume 80, Number 5, December 2007
|Number of page(s)||6|
|Published online||29 October 2007|
Levitation of spinor Bose-Einstein condensates: Macroscopic manifestation of the Franck-Condon effect
Department of Applied Physics, Osaka City University - Osaka 558-8585, Japan
2 Department of Physics, Waseda University - Tokyo 169-8555, Japan
3 Departamento de Matemáticas, E. T. S. Ingenieros Industriales, Universidad de Castilla-La Mancha 13071 Ciudad Real, Spain
4 Instituto de Matemática Aplicada a la Ciencia y la Ingeniería (IMACI), Universidad de Castilla-La Mancha 13071 Ciudad Real, Spain
5 Centro de Física Teórica e Computacional, Universidade de Lisboa, Complexo Interdisciplinar Avenida Professor Gama Pinto 2, Lisboa 1649-003, Portugal
Accepted: 8 October 2007
We study the dynamics of two-component Bose-Einstein condensates with vertically different trapping centers in the presence of an oscillating coupling field. This system provides a macroscopic analogue of the Franck-Condon effect with matter waves and shows how choosing appropriately the oscillation frequency of the coupling field leads to the levitation of the system against gravity.
PACS: 03.75.Mn – Multicomponent condensates; spinor condensates / 03.75.Lm – Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations
© Europhysics Letters Association, 2007
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