Dynamics of one-dimensional tight-binding models with arbitrary time-dependent external homogeneous fields
Quantum Physics
2013-10-25 v2 Quantum Gases
Abstract
The exact propagators of two one-dimensional systems with time-dependent external fields are presented by following the path-integral method. It is shown that the Bloch acceleration theorem can be generalized to the impulse-momentum theorem in quantum version. We demonstrate that an evolved Gaussian wave packet always keeps its shape in an arbitrary time-dependent homogeneous driven field. Moreover, that stopping and accelerating of a wave packet can be achieved by the pulsed field in a diabatic way.
Cite
@article{arxiv.1205.6999,
title = {Dynamics of one-dimensional tight-binding models with arbitrary time-dependent external homogeneous fields},
author = {W. H. Hu and L. Jin and Z. Song},
journal= {arXiv preprint arXiv:1205.6999},
year = {2013}
}
Comments
8 pages, 6 figures