Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2007-01-21
Eur. Phys. J. D 48, 229 (2008)
Physics
Condensed Matter
Other Condensed Matter
7 pages, 6 figures, significant changes made
Scientific paper
10.1140/epjd/e2008-00077-3
We investigate the quantum dynamics of repulsively bound atom pairs in an optical lattice described by the periodic Bose-Hubbard model both analytically and numerically. In the strongly repulsive limit, we analytically study the dynamical problem by the perturbation method with the hopping terms treated as a perturbation. For a finite-size system, we numerically solve the dynamic problem in the whole regime of interaction by the exact diagonalization method. Our results show that the initially prepared atom pairs are dynamically stable and the dissociation of atom pairs is greatly suppressed when the strength of the on-site interaction is much greater than the tunneling amplitude, i.e., the strongly repulsive interaction induces a self-localization phenomenon of the atom pairs.
Chen Shu
Hao Yajiang
Wang Li
No associations
LandOfFree
Quantum dynamics of repulsively bound atom pairs in the Bose-Hubbard model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Quantum dynamics of repulsively bound atom pairs in the Bose-Hubbard model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum dynamics of repulsively bound atom pairs in the Bose-Hubbard model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-375198