Transition from a Two-Dimensional Superfluid to a One-Dimensional Mott Insulator
2007 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 99, no 11, 110401- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2007. Vol. 99, no 11, 110401- p.
IdentifiersURN: urn:nbn:se:umu:diva-18169DOI: 10.1103/PhysRevLett.99.110401OAI: oai:DiVA.org:umu-18169DiVA: diva2:157842