Application of time-dependent density functional theory to electron-vibration coupling in benzene

Details Application of time-dependent density functional theory to electron-vibration coupling in benzene Application of time-dependent density functional theory to electron-vibration coupling in benzene

2000-11-01

arxiv.org/abs/physics/0011001v1

Physics

Chemical Physics

9 pages, Latex, with 4 figures

Scientific paper

Optical properties of symmetry-forbidden pi-pi transitions in benzene are calculated with the time-dependent density functional theory (TDDFT), using an adiabatic LDA functional. Quantities calculated are the envelopes of the Franck-Condon factors of the vibrationally promoted transitions and the associated oscillator strengths. The strengths, which span three orders of magnitude, are reproduced to better than a factor of two by the theory. Comparable agreement is found for the Franck-Condon widths. We conclude that rather detailed information can be obtained with the TDDFT and it may be worthwhile to explore other density functionals.

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