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Discrete chaotic states of a Bose-Einstein condensate.

作者信息

Hai Wenhua, Rong Shiguang, Zhu Qianquan

机构信息

Key Laboratory of Low-dimensional Quantum Structures and Quantum Control of Ministry of Education and Department of Physics, Hunan Normal University, Changsha 410081, China.

出版信息

Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Dec;78(6 Pt 2):066214. doi: 10.1103/PhysRevE.78.066214. Epub 2008 Dec 23.

DOI:10.1103/PhysRevE.78.066214
PMID:19256932
Abstract

We examine spatial chaos in a one-dimensional attractive Bose-Einstein condensate interacting with a Gaussian-like laser barrier and perturbed by a weak optical lattice. For a low laser barrier, chaotic regions of the parameters are demonstrated and the chaotic and regular states are illustrated numerically. In the high-barrier case, bounded perturbed solutions that describe a set of discrete chaotic states are constructed for discrete barrier heights and magic numbers of condensed atoms. Chaotic density profiles are exhibited numerically for the lowest quantum number, and analytically bounded but numerically unbounded Gaussian-like configurations are confirmed. It is shown that the chaotic wave packets can be controlled experimentally by adjusting the laser barrier potential.

摘要

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