Phase diagram for a Bose-Einstein condensate moving in an optical lattice

Details Phase diagram for a Bose-Einstein condensate moving in an optical lattice Phase diagram for a Bose-Einstein condensate moving in an optical lattice

2007-06-27

arxiv.org/abs/0706.3946v1

Physics

Condensed Matter

Other Condensed Matter

4 figures

Scientific paper

10.1103/PhysRevLett.99.150604

The stability of superfluid currents in a system of ultracold bosons was studied using a moving optical lattice. Superfluid currents in a very weak lattice become unstable when their momentum exceeds 0.5 recoil momentum. Superfluidity vanishes already for zero momentum as the lattice deep reaches the Mott insulator(MI) phase transition. We study the phase diagram for the disappearance of superfluidity as a function of momentum and lattice depth between these two limits. Our phase boundary extrapolates to the critical lattice depth for the superfluid-to-MI transition with 2% precision. When a one-dimensional gas was loaded into a moving optical lattice a sudden broadening of the transition between stable and unstable phases was observed.

Affiliated with

Also associated with

No associations

Rating

Phase diagram for a Bose-Einstein condensate moving in an optical lattice does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Phase diagram for a Bose-Einstein condensate moving in an optical lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase diagram for a Bose-Einstein condensate moving in an optical lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-255393