Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2009-03-16
New J. Phys. 11, 055045 (2009)
Physics
Condensed Matter
Other Condensed Matter
44 pages, 14 figures
Scientific paper
In this paper we study the realization of lattice models in mixtures of atomic and dipolar molecular quantum gases. We consider a situation where polar molecules form a self-assembled dipolar lattice, in which atoms or molecules of a second species can move and scatter. We describe the system dynamics in a master equation approach in the Brownian motion limit of slow particles and fast phonons, which we find appropriate for our system. In a wide regime of parameters, the reduced dynamics of the particles leads to physical realizations of extended Hubbard models with tuneable long-range interactions mediated by crystal phonons. This extends the notion of quantum simulation of strongly correlated systems with cold atoms and molecules to include phonon-dynamics, where all coupling parameters can be controlled by external fields.
Micheli Andrea
Ortner M.
Pupillo Giuseppe
Zoller Peter
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