Nonlinear resonances in delta-kicked Bose-Einstein condensates

Monteiro, T.S. and Rançon, A. and Ruostekoski, J. (2009) Nonlinear resonances in delta-kicked Bose-Einstein condensates. Physical review letters, 102 (1). ISSN 1079-7114

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Abstract

We investigate the effect of atomic interactions on ?-kicked cold atoms. We show that the clearest signature of the nonlinear dynamics is a surprisingly abrupt cutoff that appears on the leading resonances. We show that this is due to an excitation path combining both Beliaev and Landau processes, with some analogies to nonlinear self-trapping. Investigation of dynamical instability reveals further symptoms of nonlinearity such as a regime of exponential oscillations.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
123676
Deposited By:
Deposited On:
26 Feb 2018 11:44
Refereed?:
Yes
Published?:
Published
Last Modified:
28 May 2020 06:43