Abstract
Fiona Burnell (Oxford)
The devil is in the dipoles: cold dipolar gases in 1-d optical lattices
The possibility of cooling atoms and molecules with large dipole moments opens the stage for investigating numerous new phases of matter. We consider the effect of a purely repulsive dipolar interaction on a gas of bosons in a 1-dimensional optical lattice. These long-ranged interactions stabilize a devil's staircase of incompressible phases, leading to a very intricate phase diagram of Mott-Hubbard lobes. There is also a parameter regime where sites may be doubly occupied, leading to the possibility of a phase which has simultaneous spatial and superfluid order parameters.