Quantum coherence of double-well BEC: a SU(2)-coherent-state path-integral approach
Condensed Matter
2016-08-16 v4
Abstract
Macroscopic quantum coherence of Bose gas in a double-well potential is studied based on SU(2)-coherent-state path-integral. The ground state and fluctuations around it can be obtained by this method. In this picture, one can obtain macroscopic quantum superposition states for attractive Bose gas. The coherent gap of degenerate ground states is obtained with the instanton technique. The phenomenon of macroscopic quantum self-trapping is also discussed.
Keywords
Cite
@article{arxiv.cond-mat/0104361,
title = {Quantum coherence of double-well BEC: a SU(2)-coherent-state path-integral approach},
author = {Yi Zhou and Hui Zhai and Rong Lü and Zhan Xu and Lee Chang},
journal= {arXiv preprint arXiv:cond-mat/0104361},
year = {2016}
}
Comments
6 pages, 2 figures, final version to appear in Physcial Review A