Hostname: page-component-74656f9884-g96k6 Total loading time: 0 Render date: 2026-11-10T07:36:47.808Z Has data issue: false hasContentIssue false

Sparse grids for the Schrödinger equation

Published online by Cambridge University Press:  16 June 2007

Michael Griebel
Affiliation:
Institute of Numerical Simulation, University of Bonn, Wegelerstraße 6, 53115 Bonn, Germany. griebel@ins.uni-bonn.de; hamaekers@ins.uni-bonn.de
Jan Hamaekers
Affiliation:
Institute of Numerical Simulation, University of Bonn, Wegelerstraße 6, 53115 Bonn, Germany. griebel@ins.uni-bonn.de; hamaekers@ins.uni-bonn.de
Get access

Abstract

We present a sparse grid/hyperbolic cross discretization for many-particle problems.It involves the tensor product of a one-particle multilevel basis. Subsequent truncation of the associated series expansion then results in a sparse grid discretization.Here, depending on the norms involved, different variants of sparse grid techniques for many-particle spaces can be derivedthat, in the best case, result in complexities and error estimates which are independent of the number of particles.Furthermore we introduce an additional constraint which gives antisymmetric sparse grids which are suited to fermionic systems. We apply the antisymmetric sparse grid discretization to the electronic Schrödinger equationand compare costs, accuracy, convergence rates and scalability with respect to the number of electrons present in the system.


Information

Type
Research Article
Copyright
© EDP Sciences, SMAI, 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable