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arXiv · 1210.7957

Fast dynamics for atoms in optical lattices

Mateusz Lacki·Jakub Zakrzewski
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Abstract

Cold atoms in optical lattices allow for accurate studies of many body dynamics. Rapid time-dependent modifications of optical lattice potentials may result in significant excitations in atomic systems. The dynamics in such a case is frequently quite incompletely described by standard applications of tight-binding models (such as e.g. Bose-Hubbard model or its extensions) that typically neglect the effect of the dynamics on the transformation between the real space and the tight-binding basis. We illustrate the importance of a proper quantum mechanical description using a multi-band extended Bose-Hubbard model with time-dependent Wannier functions. We apply it to situations, directly related to experiments.

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Mateusz Lacki, Jakub Zakrzewski. 2013-01-09. Fast dynamics for atoms in optical lattices. https://doi.org/10.1103/physrevlett.110.065301

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