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Conference Paper
Quantum-Atom Optics Downunder
Wollongong Australia
December 3, 2007
Monday Poster Session I (QME)

Many-Body Dynamics of Repulsively Bound Pairs of Particles in a Periodic Potential

D. Petrosyan, B. Schmidt, J. R. Anglin, and M. Fleischhauer

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Repulsively interacting particles in a periodic potential can form bound composite objects, whose dissociation is suppressed by a band gap. Nearly pure samples of such repulsively bound pairs of cold atoms—“dimers”—have recently been prepared by Winkler et al. [Nature 441, 853 (2006)]. We derive an effective Hamiltonian for a lattice loaded with dimers only, and discuss its implications for many-body dynamics of the system. We show that strong on-site repulsion and nearest-neighbor attraction favor clusters of dimers with minimum surface area and uniform, commensurate filling, representing thus incompressible “droplets” of a lattice liquid.

© 2007 Optical Society of America

OCIS Codes
(020.1335) Atomic and molecular physics : Atom optics
(020.1475) Atomic and molecular physics : Bose-Einstein condensates

D. Petrosyan, B. Schmidt, J. R. Anglin, and M. Fleischhauer, "Many-Body Dynamics of Repulsively Bound Pairs of Particles in a Periodic Potential," in Quantum-Atom Optics Downunder, OSA Technical Digest (CD) (Optical Society of America, 2007), paper QME27.

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