Time-dependent renormalized-natural-orbital theory applied to laser-driven H${}_2^{+}$

Abstract

Recently introduced time-dependent renormalized-natural orbital theory (TDRNOT) is extended towards a multi-component approach in order to describe H${}_2^{+}$ beyond the Born-Oppenheimer approximation. Two kinds of natural orbitals, describing the electronic and the nuclear degrees of freedom are introduced, and the exact equations of motion for them are derived. The theory is benchmarked by comparing numerically exact results of the time-dependent Schrödinger equation for a H${}_2^{+}$ model system with the corresponding TDRNOT predictions. Ground state properties, linear response spectra, fragmentation, and high-order harmonic generation are investigated.

arXiv comment8 pages, 5 figures, RevTeX

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Cited by in corpus (1)

• Single-photon double ionization: renormalized-natural-orbital theory vs multi-configurational Hartree-Fock