Article

Transition from a Two-Dimensional Superfluid to a One-Dimensional Mott Insulator

Department of Theoretical Physics, Royal Institute of Technology, AlbaNova, SE-106 91 Stockholm, Sweden.
Physical Review Letters (Impact Factor: 7.73). 10/2007; 99(11):110401. DOI: 10.1103/PHYSREVLETT.99.110401
Source: PubMed

ABSTRACT A two-dimensional system of atoms in an anisotropic optical lattice is studied theoretically. If the system is finite in one direction, it is shown to exhibit a transition between a two-dimensional superfluid and a one-dimensional Mott insulating chain of superfluid tubes. Monte Carlo simulations are consistent with the expectation that the phase transition is of Kosterlitz-Thouless type. The effect of the transition on experimental time-of-flight images is discussed.

Download full-text

Full-text

Available from: Emil Lundh, Jul 01, 2015
2 Followers
 · 
110 Views