Gradient-dependent upper bound for the exchange-correlation energy and application to density functional theory (Articolo in rivista)

Type
Label
  • Gradient-dependent upper bound for the exchange-correlation energy and application to density functional theory (Articolo in rivista) (literal)
Anno
  • 2015-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.91.041120 (literal)
Alternative label
  • L. A. Constantin, A. Terentjevs, F. Della Sala, E. Fabiano (2015)
    Gradient-dependent upper bound for the exchange-correlation energy and application to density functional theory
    in Physical review. B, Solid state
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. A. Constantin, A. Terentjevs, F. Della Sala, E. Fabiano (literal)
Pagina inizio
  • 041120(R) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://dx.doi.org/10.1103/PhysRevB.91.041120 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 91 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Center for Biomolecular Nanotechnologies @UNILE, Istituto Italiano di Tecnologia, Via Barsanti, I-73010 Arnesano, Italy Istituto Nanoscienze-CNR, Via per Arnesano 16, I-73100 Lecce, Italy (literal)
Titolo
  • Gradient-dependent upper bound for the exchange-correlation energy and application to density functional theory (literal)
Abstract
  • We propose a simple gradient-dependent bound for the exchange-correlation energy (sLL), based on the recent nonlocal bound derived by Lewin and Lieb. We show that sLL is equivalent to the original Lieb-Oxford bound in rapidly varying density cases, but it is tighter for slowly varying density systems. To show the utility of the sLL bound we apply it to the CONSTRUCTION of simple semilocal and nonlocal exchange and correlation functionals. In both cases improved results, with respect to the use of Lieb-Oxford bound, are obtained, showing the power of the sLL bound. (literal)
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