Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 38: Quantum Gases: Bosons III / Lattices I

Q 38.3: Talk

Wednesday, March 10, 2010, 17:00–17:15, E 001

Quantum phases of polar bosons in ladder-like lattices — •Xiaolong Deng and Luis Santos — ITP, Leibniz Universität Hannover, Hannover, Germany

In this work we numerically investigate by DMRG polar bosons, e.g. polar bosonic molecules, loaded in a two-leg ladder. We are particularly interested in the role played by the inter-site dipole-dipole interaction in the ground-state phases of the system. We evaluate ground-state correlation functions, characterize various quantum phases for different interaction regimes, and identify the phase diagram for different fillings. We also predict some novel quantum phases which appear when incorporating the true long-range and anisotropic character of the dipole-dipole interaction.