Skip to main content
Aller à la page d’accueil de la Commission européenne (s’ouvre dans une nouvelle fenêtre)
français fr
CORDIS - Résultats de la recherche de l’UE
CORDIS
Contenu archivé le 2024-05-14

A correlated ab-initio strategy for the calculation of periodic systems

Objectif



The CRYSTAL ab-initio package conceived in Torino and Daresbury is now widely used (cf the corresponding EEC network 'Development and Application of the Hartree-Fock method in materials sciences') but remains a Hartree-Fock scheme. We want to open the road to the explicit treatment of the electronic correlation for infinite periodic systems.
The first step is the direct determination of Wannier (localized) functions, without passing through the Bloch functions. The method rests on the theory of dressed intermediate Hamiltonians developed in Toulouse; starting from strongly localized guessed MOs, one iteratively realizes Brillouin's theorem without full delocalization. Virtual localized MOs are obtained simultaneously. The second step evaluates the correlation energy from local double excitations (with a physically controlled cut-off) and is not more difficult than a molecular calculation. It may go through dressed CI techniques which are both size-consistent and resisting to strong correlations.

Champ scientifique (EuroSciVoc)

Ce projet n'a pas encore été classé par EuroSciVoc.
Proposez les domaines scientifiques qui vous semblent les plus pertinents et aidez-nous à améliorer notre service de classification.

Programme(s)

Thème(s)

Appel à propositions

Données non disponibles

Régime de financement

RGI - Research grants (individual fellowships)

Coordinateur

UNIVERSITE PAUL SABATIER DE TOULOUSE III
Contribution de l’UE
Aucune donnée
Adresse
118,Route de Narbonne 118
31062 Toulouse
France
Coût total
Aucune donnée

Participants (1)