États périodiques du jellium à deux et trois dimensions : approximation de Hartree-Fock

- The F t integrals evaluated from Hartree-Fock radial eigenfunctions are usually about 50 per cent larger than those derived experimentally, a fact ascribed to neglect

Selfconsistent semiclassical densities can be further used as an optimal starting point for the calculation of nuclear deformation energy surfaces like fission barriers.. There

Si l'on néglige l'interaction spin-orbite, les fonctions propres de H correspondent à des valeurs spécifiques de L et de S. Dans le calcul de l'énergie des

1 ج ( ــ رارﻛﺗﻟا : ّدﻌﯾ مﻟﺎﻋ ﻰﻟإ ﺔﻠﯾﻌﻔﺗﻟا رﻋﺎﺷ ﺎﻬﻠﺧدأ ﻲﺗﻟا ةدﯾدﺟﻟا ﺔﯾﻘﯾﺳوﻣﻟا رﺻﺎﻧﻌﻟا نﻣ رارﻛﺗﻟا ، ﺔﯾرﻌﺷﻟا ﻰﻘﯾﺳوﻣﻟا ﺔﯾﻟﺎﻣﺟ ﻲﻓ رﯾﺑﻛ لﻛﺷﺑ و مﻫﺎﺳﯾ ﻪﻧوﻛ

When using Hartree-Fock (HF) trial wave functions in quantum Monte Carlo calculations, one faces, in case of HF instabilities, the HF symmetry dilemma in choosing between the

Entre audit et conseil, la distinction est à n'en point douter plus délicate. A l'inverse du contrôle, qui se situe en amont de l'expression d'une opinion par l'auditeur, le

We give rigorous existence results for the polarized vacuum, and check (in the reduced case) the relevance of our definitions with respect to Quantum Electrodynamics by computing

Keywords: compact self-adjoint operators; trace-class operators; mixed states; occupa- tion numbers; Lieb-Thirring inequality; Schr¨ odinger operator; asymptotic distribution