Time-Dependent Variational Analysis of Josephson Oscillations in a Two-component Bose-Einstein Condensate
Soft Condensed Matter
2009-10-31 v1
Abstract
The dynamics of Josephson-like oscillations between two coupled Bose-Einstein condensates is studied using the time-dependent variational method. We suppose that the quantum state of the condensates is a gaussian wave-packet which can translate and perform breathing shape oscillations. Under this hypotheses we study the influence of these degrees of freedom on the tunneling dynamics by comparing the full-model with one where these degrees of freedom are ``frozen'' at its equilibrium values. The result of our calculation shows that when the traps are not displaced the two models agree, whereas when they are, the models differ considerably, the former being now closer to its linear approximation.
Keywords
Cite
@article{arxiv.cond-mat/9912217,
title = {Time-Dependent Variational Analysis of Josephson Oscillations in a Two-component Bose-Einstein Condensate},
author = {Chi-Yong Lin and E. J. V. de Passos and Da-Shin Lee},
journal= {arXiv preprint arXiv:cond-mat/9912217},
year = {2009}
}
Comments
10 pages, 2 figures