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s∗-compressibility of the discrete Hartree-Fock equation

Published online by Cambridge University Press:  13 February 2012

Heinz-Jürgen Flad and
Reinhold Schneider
Heinz-Jürgen Flad
Affiliation:
Institut für Mathematik, Technische Universität Berlin, Straße des 17. Juni 136, 10623 Berlin, Germany. flad@math.tu-berlin.de
Reinhold Schneider
Affiliation:
Institut für Mathematik, Technische Universität Berlin, Straße des 17. Juni 136, 10623 Berlin, Germany. flad@math.tu-berlin.de

Abstract

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The Hartree-Fock equation is widely accepted as the basic model of electronic structure calculation which serves as a canonical starting point for more sophisticated many-particle models. We have studied the s∗-compressibility for Galerkin discretizations of the Hartree-Fock equation in wavelet bases. Our focus is on the compression of Galerkin matrices from nuclear Coulomb potentials and nonlinear terms in the Fock operator which hitherto has not been discussed in the literature. It can be shown that the s∗-compressibility is in accordance with convergence rates obtained from best N-term approximation for solutions of the Hartree-Fock equation. This is a necessary requirement in order to achieve numerical solutions for these equations with optimal complexity using the recently developed adaptive wavelet algorithms of Cohen, Dahmen and DeVore.

Keywords

Hartree-Fock equationmatrix compressionbestN-term approximation

Information

Type
Research Article
Information
ESAIM: Mathematical Modelling and Numerical Analysis , Volume 46 , Issue 5 , September 2012, pp. 1055 - 1080
Copyright
© EDP Sciences, SMAI, 2012

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