title: Dipolar molecules in optical lattices.
abstract: 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.
authors.affiliation: Institute of Physics of the Polish Academy of Sciences, Warsaw, Poland.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Sowiński
authors.forename: Omjyoti
authors.initials: O
authors.lastname: Dutta
authors.forename: Philipp
authors.initials: P
authors.lastname: Hauke
authors.forename: Luca
authors.initials: L
authors.lastname: Tagliacozzo
authors.forename: Maciej
authors.initials: M
authors.lastname: Lewenstein