Hannover 2016 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 20: Atomic systems in external fields

A 20.5: Poster

Dienstag, 1. März 2016, 16:30–19:00, Empore Lichthof

Instabilities and Inaccuracies of Multi-Configuration Time-dependent Hartree-Fock Applied to Atomic Systems — •Christopher Hinz, Sebastian Bauch, and Michael Bonitz — ITAP, Christian-Albrechts-Univeristät Kiel, Leibnizstraße 15, 24098 Kiel

We demonstrate that the widely used multi-configuration time-dependent Hartree-Fock method [1] is restricted to a certain class of applications and fails for scenarios where small parts of the wave function are important, such as typically occurring in strong-field physics and attosecond methodology. By using illustrative and physically relevant examples, we show the existence of serious instabilities in the method itself and demonstrate that for several important cases the assumed convergence of the method with respect to electron correlations is virtually absent [2,3].

 D. Hochstuhl, C. Hinz and M. Bonitz, EPJ ST 223, 177-336 (2014)
 C. M. Hinz, S. Bauch, and M. Bonitz, submitted to JPCS (2015)
 C. M. Hinz, S. Bauch, and M. Bonitz, submitted to Phys. Rev. A (2016)