title: Error of finite basis expansions in time-dependent calculations of atom-laser interaction.
abstract: We propose a method to quantitatively estimate the error made with a finite basis expansion in time-dependent calculations. This method is applied to the hydrogen atom in intense laser fields and used to compare different basis sets with each other. We also show how to construct a Gaussian basis set suitable for the description of ionization dynamics in intense laser fields.
authors.affiliation: Institut für Theoretische Physik, Technische Universität Dresden, D-01062 Dresden, Germany. Mathias.Uhlmann@gmx.de
authors.forename: Mathias
authors.initials: M
authors.lastname: Uhlmann
authors.forename: Thomas
authors.initials: T
authors.lastname: Kunert
authors.forename: Rüdiger
authors.initials: R
authors.lastname: Schmidt