Dipolar Molecules in Optical Lattices

Details Dipolar Molecules in Optical Lattices Dipolar Molecules in Optical Lattices

2011-09-22

arxiv.org/abs/1109.4782v3

Phys. Rev. Lett. 108, 115301 (2012)

Physics

Condensed Matter

Quantum Gases

5 figures, 1 supplementary material

Scientific paper

10.1103/PhysRevLett.108.115301

We study the extended Bose--Hubbard model describing an ultracold gas of dipolar molecules in an optical lattice, taking into account all on-site and nearest-neighbor interactions, including occupation-dependent tunneling and pair tunneling terms. Using exact diagonalization and the multiscale entanglement renormalization ansatz, we show that these terms can destroy insulating phases and lead to novel quantum phases. These considerable changes of the phase diagram have to be taken into account in upcoming experiments with dipolar molecules.

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