Solids and Supersolids of Three-Body Interacting Polar Molecules on an Optical Lattice

Journal Article · Fri Oct 10 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.150405· OSTI ID:21179784

Schmidt, Kai P ^[1]; Dorier, Julien ^[2]; Laeuchli, Andreas M ^[3]

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1. Lehrstuhl fuer theoretische Physik I, Otto-Hahn-Str. 4, TU Dortmund, D-44221 Dortmund (Germany)
2. Institute of Theoretical Physics, Ecole Polytechnique Federale de Lausanne, CH 1015 Lausanne (Switzerland)
3. Institut Romand de Recherche Numerique en Physique des Materiaux (IRRMA), CH-1015 Lausanne (Switzerland)

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 Buechler 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.

• OSTI ID: 21179784
• Journal Information: Physical Review Letters, Vol. 101, Issue 15; Other Information: DOI: 10.1103/PhysRevLett.101.150405; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSONS
COMPUTERIZED SIMULATION
MOLECULES
MONTE CARLO METHOD
PHASE DIAGRAMS
SEMICLASSICAL APPROXIMATION
TETRAGONAL LATTICES
THREE-BODY PROBLEM