Abstract
The theory for a single excited state based on Kato’s theorem is revisited. Density scaling proposed by Chan and Handy is used to construct a Kohn-Sham scheme with a scaled density. It is shown that there exists a value of the scaling factor for which the correlation energy disappears. Generalized OPM and KLI methods incorporating correlation are proposed. A ζKLI method as simple as the original KLI method is presented for excited states.
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Acknowledgements
This work is supported by the TAMOP 4.2.1/B-09/1/KONV-2010-0007 project. The project is co-financed by the European Union and the European Social Fund. Grant OTKA No. K67923 is also gratefully acknowledged.
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Nagy, Á. (2012). Density Scaling for Excited States. In: Hoggan, P., Brändas, E., Maruani, J., Piecuch, P., Delgado-Barrio, G. (eds) Advances in the Theory of Quantum Systems in Chemistry and Physics. Progress in Theoretical Chemistry and Physics, vol 22. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-2076-3_11
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