23 citations · 34 across the 6 of their papers we have counts for
6 papers
A simple and efficient algorithm for computing the Baker-Campbell-Hausdorff series
Harald Hofstätter
A new algorithm for computing coefficients of the Baker--Campbell--Hausdorff series is presented, which can be straightforwardly implemented in any general-purpose programming lang…
Smallest common denominators for the homogeneous components of the Baker-Campbell-Hausdorff series
Harald Hofstätter
In a recent paper the author derived a formula for calculating common denominators for the homogeneous components of the Baker-Campbell-Hausdorff (BCH) series. In the present work…
Denominators of coefficients of the Baker-Campbell-Hausdorff series
Harald Hofstätter
For the computation of terms of the Baker-Campbell-Hausdorff series $H = \log(e^Ae^B})$ some a priori knowledge about the denominators of the coefficients of the series can be bene…
Chaos-induced depletion of a Bose-Einstein condensate
Ralf Wanzenböck, Stefan Donsa, Harald Hofstätter +3
The mean-field limit of a bosonic quantum many-body system is described by (mostly) non-linear equations of motion which may exhibit chaos very much in the spirit of classical part…
Order conditions for exponential integrators
Harald Hofstätter
This paper provides an algebraic framework for the generation of order conditions for the construction of exponential integrators like splitting and Magnus-type methods for the num…
Long-time expansion of a Bose-Einstein condensate: Can Anderson localization be observed?
Stefan Donsa, Harald Hofstätter, Othmar Koch +2
We numerically explore the long-time expansion of a one-dimensional Bose-Einstein condensate in a disorder potential employing the Gross-Pitaevskii equation. The goal is to search…