125 citations · 704 across the 33 of their papers we have counts for
11 papers · 1 filter
Rotating states for trapped bosons in an optical lattice
Emil Lundh
Rotational states for trapped bosons in an optical lattice are studied in the framework of the Hubbard model. Critical frequencies are calculated and the main parameter regimes are…
Nonlinear behavior of bosons in anisotropic optical lattices
A. Cetoli, E. Lundh
We investigate the behavior of an array of Bose-Einstein condensate tubes described by means of a Bose-Hubbard Hamiltonian. Using an anisotropic non-polynomial Schrodinger equation…
Mott transition in anharmonic confinement
Emil Lundh
Two effects are identified that affect the visibility of the Mott transition in an atomic gas in an optical lattice confined in a power-law potential. The transition can be made mo…
Long term dynamics of the splitting of a doubly quantized vortex in a two-dimensional condensate
Halvor M. Nilsen, Emil Lundh
We study the nonlinear dynamics of the splitting of a doubly quantized vortex in a trapped condensate. The dynamics is studied in detail by solving the Gross-Pitaevskii equation. T…
Transition from a two-dimensional superfluid to a one-dimensional Mott insulator
Sara Bergkvist, Robert Saers, Emil Lundh +3
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…
Construction of a giant vortex state in a trapped Fermi system
Emil Lundh
A superfluid atomic Fermi system may support a giant vortex if the trapping potential is anharmonic. In such a potential, the single-particle spectrum has a positive curvature as a…