23 citations · 48 across the 6 of their papers we have counts for
6 papers
Fictitious-time wave-packet dynamics in atomic systems
Tomaž Fabčič, Jörg Main, Günter Wunner
Gaussian wave packets (GWPs) are well suited as basis functions to describe the time evolution of arbitrary wave functions in systems with nonsingular smooth potentials. They are l…
Fictitious time wave packet dynamics: II. Hydrogen atom in external fields
T. Fabčič, J. Main, G. Wunner
In the preceding paper [T. Fabcic et al., preprint] "restricted Gaussian wave packets" were introduced for the regularized Coulomb problem in the four-dimensional Kustaanheimo-Stie…
Fictitious time wave packet dynamics: I. Nondispersive wave packets in the quantum Coulomb problem
T. Fabčič, J. Main, G. Wunner
Nondispersive wave packets in a fictitious time variable are calculated analytically for the field-free hydrogen atom. As is well known by means of the Kustaanheimo-Stiefel transfo…
Nonlinear Dynamics of Bose-Einstein Condensates with Long-Range Interactions
G. Wunner, H. Cartarius, T. Fabčič +3
The motto of this paper is: Let's face Bose-Einstein condensation through nonlinear dynamics. We do this by choosing variational forms of the condensate wave functions (of given sy…
Bifurcations, order, and chaos in the Bose-Einstein condensation of dipolar gases
Patrick Köberle, Holger Cartarius, Tomaž Fabčič +2
We apply a variational technique to solve the time-dependent Gross-Pitaevskii equation for Bose-Einstein condensates in which an additional dipole-dipole interaction between the at…
Time propagation of constrained coupled Gaussian wave packets
T. Fabcic, J. Main, G. Wunner
The dynamics of quantum systems can be approximated by the time propagation of Gaussian wave packets. Applying a time dependent variational principle, the time evolution of the par…