Hannover 2016 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 8: Atomic systems in external fields II
A 8.4: Vortrag
Montag, 29. Februar 2016, 15:15–15:30, f303
TDRNOT applied to the laser-driven hydrogen molecular ion — •Adrian Hanusch, Julius Rapp, Martins Brics, and Dieter Bauer — Institut für Physik, Universität Rostock, 18051 Rostock, Germany
The recently introduced time-dependent renormalized-natural-orbital theory (TDRNOT) has already proven good performance in benchmarks using an exactly solvable 1D Helium model atom [1-3].
TDRNOT is now extended towards a multi-component approach in order to describe a one-dimensional H2+ model system beyond the Born-Oppenheimer approximation. Different kinds of natural orbitals are introduced in order to describe the electronic and nuclear degree of freedom, and exact equations of motion for them are derived.
The theory is then benchmarked by calculating ground state properties and linear response spectra and comparing them to the exact results obtained from solving the time-dependent Schrödinger equation. Furthermore, we test the ability of TDRNOT to describe the fragmentation of H2+ in intense laser fields and high-order harmonic generation.
[1] M. Brics, D. Bauer, Phys. Rev. A 88, 052514 (2013).
[2] J. Rapp, M. Brics, D. Bauer Phys. Rev. A 90, 012518 (2014).
[3] M. Brics, J. Rapp, D. Bauer, Phys. Rev. A 90, 053418 (2014).