Macroscopic Quantum Coherence in a repulsive Bose-Einstein condensate
量子气体
2011-11-15 v1
摘要
We consider a Bose-Einstein bicondensate (BEC) of , trapped in two different internal levels, in a situation where the density undergoes a symmetry breaking in momentum space. This occurs for a suitable number of condensed atoms within a double well dispersion curve, obtained by Raman coupling two internal states with two tilted and detuned light fields. Evidence of bistability results from the Gross-Pitaevskii equation. By second quantization, we evaluate the tunneling rate between the two asymmetric states; the effects of losses on coherence are also considered.
引用
@article{arxiv.cond-mat/0206041,
title = {Macroscopic Quantum Coherence in a repulsive Bose-Einstein condensate},
author = {A. Montina and F. T. Arecchi},
journal= {arXiv preprint arXiv:cond-mat/0206041},
year = {2011}
}
备注
4 pages, 4 figures