Interaction-induced anomalous transport behavior in one dimensional optical lattice
Abstract
The non-equilibrium dynamics of spin impurity atoms in a strongly interacting one-dimensional (1D) Bose gas under the gravity field is studied. We show that due to the non-equilibrium preparation of the initial state as well as the interaction between the impurity atoms and other bosons, a counterintuitive phenomenon may emerge: the impurity atoms could propagate upwards automatically in the gravity field . The effects of the strength of interaction, the gradient of the gravity field, as well as the different configurations of the initial state are investigated by studying the time-dependent evolution of the 1D strongly interacting bosonic system using time-evolving block decimation (TEBD) method. A profound connection between this counterintuitive phenomenon and the repulsive bound pair is also revealed.
Cite
@article{arxiv.0911.3457,
title = {Interaction-induced anomalous transport behavior in one dimensional optical lattice},
author = {Zi Cai and Lei Wang and X. C. Xie and Yupeng Wang},
journal= {arXiv preprint arXiv:0911.3457},
year = {2010}
}
Comments
4.1 pages