We propose a method for creating far-field optical barrier potentials for ultracold atoms with
widths that are narrower than the diffraction limit and can approach tens of nanometers. The …

I show that random distributions of vortex–antivortex pairs (rather than of individual vortices)
lead to scaling of typical winding numbers Script W trapped inside a loop of circumference …

We study a linear ramp of the nearest-neighbor tunneling rate in the Bose-Hubbard model
driving the system from the Mott insulator state into the superfluid phase. We employ the …

We study the dynamics of three-dimensional weakly linked Bose-Einstein condensates
using a multimode model with an effective interaction parameter. The system is confined by …

Ultracold atomic gases in optical lattices are a very intensively researched today from both
theoretical and experimental perspective. These systems may serve as quantum simulators …

We consider large rings of weakly coupled Bose-Einstein condensates, analyzing their
transition to chaotic dynamics and loss of coherence. Initially, a ring is considered to be in an …

The quantum phase transition from the Mott insulator state to the superfluid in the Bose-
Hubbard model is investigated. We research one, two and three dimensional lattices in the …

Nonequilibrium dynamics of noninteracting bosons in a one-dimensional ring-shaped lattice
is studied by means of the Kinetic Monte Carlo method. The system is approximated by the …

arXiv:1305.4695v1 [cond-mat.stat-mech] 21 May 2013 Page 1 Winding numbers and scaling
tilts from random vortex-antivortex pairs. WH Zurek1 1Theory Division, Los Alamos National …

The quantum phase transition from the Mott insulator state to the superfluid in the Bose-
Hubbard model is investigated. We research one, two and three dimensional lattices in the …