Excitation energies of benzene from Kohn-Sham theory
โ Scribed by Handy, Nicholas C.; Tozer, David J.
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 166 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0192-8651
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โฆ Synopsis
Singlet and triplet vertical excitation energies are determined for benzene using time-dependent KohnแSham density functional theory. The potential of the HCTH continuum functional is explicitly corrected, using a recently developed procedure, to impose the appropriate y1rr q C asymptotic ลฝ U . ลฝ . behavior. The 48 valence ยช and Rydberg ยช n s 3 excitation energies computed using this corrected potential have a mean absolute error of 0.12 eV.
๐ SIMILAR VOLUMES
The performance of four commonly used density functionals VWN, BLYP, BP91, and Becke's original three-parameter approximation to the adiabatic connection formula, referred to herein as the adiabatic connection method or . w ACM was studied with a series of six Gaussian-type atomic basis sets DZP, ลฝ
The exact equation, called the partial ''homogeneity'' relation, involving the nonadditive kinetic energy functional of the noninteracting electrons is derived within the KohnแSham theory for subsystems. It has implications for the functional structure, e.g., predicting its explicit dependence upon
By defining functionals over all states in the Hilbert space, we derive the ลฝ . Kohn and Sham KS equations for the ground state. Density functionals are defined as an intermediate step and they are restricted to single state representable densities. We do not make any use of the one-to-one correspon