Mean-field dynamics of a non-Hermitian Bose-Hubbard dimer
Quantum Physics
2008-10-10 v2 Other Condensed Matter
Abstract
We investigate an -particle Bose-Hubbard dimer with an additional effective decay term in one of the sites. A mean-field approximation for this non-Hermitian many-particle system is derived, based on a coherent state approximation. The resulting nonlinear, non-Hermitian two-level dynamics, in particular the fixed point structures showing characteristic modifications of the self-trapping transition, are analyzed. The mean-field dynamics is found to be in reasonable agreement with the full many-particle evolution.
Keywords
Cite
@article{arxiv.0807.1777,
title = {Mean-field dynamics of a non-Hermitian Bose-Hubbard dimer},
author = {E. M. Graefe and H. J. Korsch and A. E. Niederle},
journal= {arXiv preprint arXiv:0807.1777},
year = {2008}
}
Comments
4 pages, 3 figures, published version