Solids and supersolids of three-body interacting polar molecules in an optical lattice

Schmidt, Kai P.; Dorier, Julien; Laeuchli, Andreas

Solids and supersolids of three-body interacting polar molecules in an optical lattice

Authors

Schmidt, Kai P.

Dorier, Julien

Laeuchli, Andreas

Description

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 [Nature Phys. 3, 726 (2007)]. To this end quantum Monte Carlo simulations, exact diagonalization and a semiclassical approach are used to explore hardcore bosons on the two-dimensional 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.
4+ pages, 4 figures, published version