Hannover 2016 – scientific programme

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A: Fachverband Atomphysik

A 25: Interaction with strong or short laser pulses II

A 25.1: Invited Talk

Wednesday, March 2, 2016, 14:30–15:00, f107

Describing the correlated electron dynamics in atoms and molecules — •Sebastian Bauch — Institut für Theoretische Physik und Astrophysik, CAU Kiel, Germany

The description of the correlated dynamics of electrons in atoms and molecules is a theoretically challenging task and, for systems consisting of more than two electrons, only possible by employing approximative schemes. Among these methods, time-dependent approaches based on the configuration-interaction (CI) expansion of the wave function play an important role. In particular, the time-dependent generalized-active-space CI method offers a promising possibility for the accurate description of the multi-electron dynamics which are initiated by external laser fields. This talk sketches the ideas of this recently established method, discusses its relation to alternative approaches, and reviews applications. These include photoionization of many-electron atoms [1], strong-field effects in molecular model systems [2,3], correlation effects in the enhanced ionization phenomenom of diatomic molecules [4], and the full-dimensional description of multi-electron molecules in strong laser fields [5].

[1] D. Hochstuhl, and M. Bonitz, Phys. Rev. A 86 053424 (2012) [2] S. Bauch, L.K. Sørensen, and L. B. Madsen, Phys. Rev. A 90 062508 (2014) [3] S. Bauch, H.R. Larsson, C. Hinz, and M. Bonitz, submitted (2015) [4] S. Chattopadhay, S. Bauch and L.B. Madsen, in press, Phys. Rev. A [5] H.R. Larsson, S. Bauch, L.K. Sørensen and M. Bonitz, submitted (2015)