title: Solids and supersolids of three-body interacting polar molecules on an optical lattice.
abstract: 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.
authors.affiliation: Lehrstuhl für theoretische Physik I, Otto-Hahn-Str. 4, TU Dortmund, D-44221 Dortmund, Germany. schmidt@fkt.physik.uni-dortmund.de
authors.forename: Kai P
authors.initials: KP
authors.lastname: Schmidt
authors.forename: Julien
authors.initials: J
authors.lastname: Dorier
authors.forename: Andreas M
authors.initials: AM
authors.lastname: Läuchli