Solids and Supersolids of Three-Body Interacting Polar Molecules on an Optical Lattice
Kai Phillip Schmidt, Julien Dorier, Andreas Martin Läuchli
We study the physics of cold polar molecules loaded into an optical lattice in the regime of strong three-body interactions, as put forward recently by Büchler et al. [Nature Phys. 3, 726 (2007)]. To this end, quantum Monte Carlo simulations, exact diagonalization, and a semiclassical approach are used to explore hard-core bosons on the 2D square lattice which interact solely by long-ranged three-body terms. The resulting phase diagram shows a sequence of solid and supersolid phases. Our findings are directly relevant for future experimental implementations and open a new route towards the discovery of a lattice supersolid phase in experiment.
arXiv:0805.1408•Physical Review Letters•Oct 7, 2008•42 citations