Mostrando 10 resultados de: 20
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International Journal of Quantum Chemistry(6)
Journal of Molecular Structure: THEOCHEM(3)
Physical Review A - Atomic, Molecular, and Optical Physics(2)
The Journal of Chemical Physics(2)
Theoretical Chemistry Accounts(2)
Atomic kinetic- and exchange-energy functionals by means of local-scaling transformations
ArticleAbstract: Using several types of simple generating orbitals, explicit expressions for the kinetic-energy functPalabras claves:density functional theory, Exchange-energy functionals, Kinetic-energy functionals, Local-scaling transformationsAutores:Colle R., Eduardo V. Ludeña, Karasiev V.V., López‐boada R.Fuentes:scopusAn approximate universal energy functional in density functional theory
ArticleAbstract: Using Harriman's orthonormal set, a closed expression for the reduced first order density operator γPalabras claves:Autores:Eduardo V. LudeñaFuentes:scopusAnalysis of the stability of finite subspaces in density functional theory
ArticleAbstract: We study the problem of the stability of finite subspaces with respect to the external potential inPalabras claves:DFT, Finite subspaces, Hydrogen atomAutores:Boada R.L., Bokanowski O., Eduardo V. Ludeña, Pino R.Fuentes:scopusAnalysis of various quantum mechanical and DFT energy definitions. Application to atomic isoelectronic series
ArticleAbstract: Relations between the quantum mechanical and density functional theory definitions for exchange, excPalabras claves:Correlation energy, density functional theory, Exchange-correlation functionals, Isoelectronic seriesAutores:Eduardo V. Ludeña, Karasiev V.V., Valderrama E.Fuentes:scopusA DFT variational approach to Hooke's atom based on local-scaling transformations
Conference ObjectAbstract: The local-scaling transformation version of density functional theory, LS-DFT, is employed in orderPalabras claves:density functional theory, Hooke's atom, Local-scaling transformationsAutores:Artemyev A., Eduardo V. Ludeña, Karasiev V.V.Fuentes:scopusA density functional theory test study on the N<inf>2</inf>⋯He dimer
ArticleAbstract: In the present contribution we report a study of the weakly bound van der Waals N2-He molecule in thPalabras claves:density functional theory, Energy surface, Van der WaalsAutores:Eduardo V. Ludeña, Hernandez A.J., José Luis Paz, Manzanares I C., Salazar M.C.Fuentes:scopusElectronic-structure kinetic-energy functional based on atomic local-scaling transformations
ArticleAbstract: The electronic-structure calculations of molecules were analyzed using explicit noninteracting kinetPalabras claves:Autores:Artemyev A., Eduardo V. Ludeña, Karasiev V.V.Fuentes:scopusExact exchange-only density functional theory by means of local scaling transformations
ArticleAbstract: The density-constrained variation of the kinetic energy of a non-interacting system carried out withPalabras claves:Autores:Eduardo V. Ludeña, López‐boada R., Maldonado J.E.Fuentes:scopusExplicit density functionals for the energy by means of padé approximants to local-scaling transformations
Book PartAbstract: We review in the present work the explicit construction of energy density functionals within the locPalabras claves:Autores:Eduardo V. Ludeña, López‐boada R., Pino R.Fuentes:scopusHartree-Fock calculations in the context of the local-scaling transformation version of density functional theory. Applications to the lithium and beryllium atoms
ArticleAbstract: We advance a reformulation of the Hartree-Fock problem in the context of the local-scaling transformPalabras claves:Beryllium, DFT, Hartree-Fock, Lithium, Local-scaling DFTAutores:Eduardo V. Ludeña, López‐boada R.Fuentes:scopus