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Zawartość zarchiwizowana w dniu 2024-05-29

Development and application of electronic quantum Monte Carlo methods to improve density functional theory

Cel

The present project concerns developments in computational electronic-structure theory, which are relevant to theoretical chemistry and materials science.

It aims at allowing the applicant to pursue the work he began to improve the multi-determinantal density functional theory (DFT) method proposed by Dr. Andreas Savin and coworkers, which, by combining a long-range conventional wave function calculation with a short-range density functional approximation, has the potential of curing the main shortcomings of present-day DFT.

To do so, we want to extend to general many-electron systems the recently-proposed Overhauser method which, starting from approximate effective two-electron potentials, can produce very accurate short-range system-averaged pair densities (or intracule densities) and therefore very accurate short-range correlation energies, needed in the multi-determinantal DFT approach.

For this purpose, we will need to develop and apply appropriate quantum Monte Carlo (QMC) techniques in order to access ac curate reference data.

We plan to achieve three successive objectives:
- extend and apply methods for obtaining very accurate energy-optimized QMC wave functions;
- calculate accurate short-range intracule densities from those QMC wave functions for so me atomic and molecular reference systems;
- determine the corresponding Overhauser effective two-electron potentials, and propose approximations to them.

The first two objectives will be carried out during the outgoing phase at Cornell University (USA) with Prof. Cyrus J. Umrigar where the applicant will acquire the necessary knowledge in QMC simulations, while the third objective will be done during the return phase at the University of Paris 6 (France) with Dr. Andreas Savin.

The fellowship will allow the applicant to broaden and deepen his knowledge of electronic-structure theory with benefits for the return host institution and for his future research career.

Dziedzina nauki (EuroSciVoc)

Słowa kluczowe

Temat(-y)

Zaproszenie do składania wniosków

FP6-2005-MOBILITY-6
Zobacz inne projekty w ramach tego zaproszenia

System finansowania

OIF - Marie Curie actions-Outgoing International Fellowships

Koordynator

UNIVERSITE PIERRE ET MARIE CURIE - PARIS 6
Wkład UE
Brak danych
Koszt całkowity
Brak danych

Uczestnicy (1)