Bose-Einstein condensates on tilted lattices: coherent, chaotic and subdiffusive dynamics

Details Bose-Einstein condensates on tilted lattices: coherent, chaotic and subdiffusive dynamics Bose-Einstein condensates on tilted lattices: coherent, chaotic and subdiffusive dynamics

2009-04-29

arxiv.org/abs/0904.4549v1

Physics

Quantum Physics

4 pages, 5 figures

Scientific paper

The dynamics of a (quasi)one-dimensional interacting atomic Bose-Einstein condensate in a tilted optical lattice is studied in a discrete mean-field approximation, i.e., in terms of the discrete nonlinear Schr\"odinger equation. If the static field is varied the system shows a plethora of dynamical phenomena. In the strong field limit we demonstrate the existence of (almost) non-spreading states which remain localized on the lattice region populated initially and show coherent Bloch oscillations with fractional revivals in the momentum space (so called quantum carpets). With decreasing field, the dynamics becomes irregular, however, still confined in configuration space. For even weaker fields we find sub-diffusive dynamics with a wave-packet width spreading as $t^{1/4}$.

Affiliated with

Also associated with

No associations

Rating

Bose-Einstein condensates on tilted lattices: coherent, chaotic and subdiffusive dynamics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Bose-Einstein condensates on tilted lattices: coherent, chaotic and subdiffusive dynamics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bose-Einstein condensates on tilted lattices: coherent, chaotic and subdiffusive dynamics will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-511601