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arXiv · 1311.4459

The Exact Wavefunction Factorization of a Vibronic Coupling System

Ying-Chih Chiang·Shachar Klaiman·Frank Otto·Lorenz S. Cederbaum
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Abstract

We investigate the exact wavefunction as a single product of electronic and nuclear wavefunction for a model conical intersection system. Exact factorized spiky potentials and nodeless nuclear wavefunctions are found. The exact factorized potential preserves the symmetry breaking effect when the coupling mode is present. Additionally the nodeless wavefunctions are found to be closely related to the adiabatic nuclear eigenfunctions. This phenomenon holds even for the regime where the non-adiabatic coupling is relevant, and sheds light on the relation between the exact wavefunction factorization and the adiabatic approximation.

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Ying-Chih Chiang, Shachar Klaiman, Frank Otto, Lorenz S. Cederbaum. 2013-11-18. The Exact Wavefunction Factorization of a Vibronic Coupling System. https://doi.org/10.1063/1.4863315

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