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7 papers · 2 filters
Comment on "Coherent Ratchets in Driven Bose-Einstein Condensates"
G. Benenti, G. Casati, S. Denisov +4
C. E. Creffield and F. Sols (Phys. Rev. Lett. 103, 200601 (2009)) recently reported finite, directed time-averaged ratchet current, for a noninteracting quantum particle in a perio…
Dynamics and stability of Bose-Einstein solitons in tilted optical lattices
E. Diaz, C. Gaul, R. P. A. Lima +2
Bloch oscillations of Bose-Einstein condensates realize sensitive matter-wave interferometers. We investigate the dynamics and stability of bright-soliton wave packets in one-dimen…
Constructing classical field for a Bose-Einstein condensate in arbitrary trapping potential; quadrupole oscillations at nonzero temperatures
Tomasz Karpiuk, Miroslaw Brewczyk, Mariusz Gajda +1
We optimize the classical field approximation of the version described in J. Phys. B 40, R1 (2007) for the oscillations of a Bose gas trapped in a harmonic potential at nonzero tem…
Attractive Hubbard Model on a Honeycomb Lattice
K. L. Lee, K. Bouadim, G. G. Batrouni +4
We study the attractive fermionic Hubbard model on a honeycomb lattice using determinantal quantum Monte Carlo simulations. By increasing the interaction strength U (relative to th…
Pure Mott phases in confined ultracold atomic systems
V. G. Rousseau, G. G. Batrouni, D. E. Sheehy +2
We propose a novel scheme for confining atoms to optical lattices by engineering a spatially-inhomogeneous hopping matrix element in the Hubbard-model (HM) description, a situation…
Simulating and detecting artificial magnetic fields in trapped atoms
Matthias Rosenkranz, Alexander Klein, Dieter Jaksch
A Bose-Einstein condensate exhibiting a nontrivial phase induces an artificial magnetic field in immersed impurity atoms trapped in a stationary, ring-shaped optical lattice. We pr…