179 citations · 527 across the 11 of their papers we have counts for
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Tunneling-induced damping of phase coherence revivals in deep optical lattices
Uwe R. Fischer, Ralf Schützhold
We consider phase coherence collapse and revival in deep optical lattices, and calculate within the Bose-Hubbard model the revival amplitude damping incurred by a finite tunneling…
Effect of fluctuations on the superfluid-supersolid phase transition on the lattice
Ralf Schützhold, Michael Uhlmann, Uwe R. Fischer
We derive a controlled expansion into mean field plus fluctuations for the extended Bose-Hubbard model, involving interactions with many neighbors on an arbitrary periodic lattice,…
Bogoliubov theory of quantum correlations in the time-dependent Bose-Hubbard model
Uwe R. Fischer, Ralf Schützhold, Michael Uhlmann
By means of an adapted mean-field expansion for large fillings , we study the evolution of quantum fluctuations in the time-dependent Bose-Hubbard model, starting in the sup…
Mean-field expansion in Bose-Einstein condensates with finite-range interactions
Ralf Schützhold, Michael Uhlmann, Yan Xu +1
We present a formal derivation of the mean-field expansion for dilute Bose-Einstein condensates with two-particle interaction potentials which are weak and finite-range, but otherw…
Quantum backreaction in dilute Bose-Einstein condensates
Ralf Schützhold, Michael Uhlmann, Yan Xu +1
For many physical systems which can be approximated by a classical background field plus small (linearized) quantum fluctuations, a fundamental question concerns the correct descri…
Quantum simulation of cosmic inflation in two-component Bose-Einstein condensates
Uwe R. Fischer, Ralf Schützhold
Generalizing the one-component case, we demonstrate that the propagation of sound waves in two-component Bose-Einstein condensates can also be described in terms of effective sonic…