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On large-scale diagonalization techniques for the Anderson model of localization
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Schenk, Olaf, Bollhofer, Matthias and Roemer, Rudolf A. (2006) On large-scale diagonalization techniques for the Anderson model of localization. SIAM Journal on Scientific Computing, Vol.28 (No.3). pp. 963-983. doi:10.1137/050637649 ISSN 1064-8275.
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Official URL: http://dx.doi.org/10.1137/050637649
Abstract
We propose efficient preconditioning algorithms for an eigenvalue problem arising in quantum physics, namely the computation of a few interior eigenvalues and their associated eigenvectors for large-scale sparse real and symmetric indefinite matrices of the Anderson model
of localization. We compare the Lanczos algorithm in the 1987 implementation by Cullum and Willoughby with the shift-and-invert techniques in the implicitly restarted Lanczos method and in the Jacobi–Davidson method. Our preconditioning approaches for the shift-and-invert symmetric indefinite linear system are based on maximum weighted matchings and algebraic multilevel incomplete
LDLT factorizations. These techniques can be seen as a complement to the alternative idea of using more complete pivoting techniques for the highly ill-conditioned symmetric indefinite Anderson matrices. We demonstrate the effectiveness and the numerical accuracy of these algorithms. Our numerical examples reveal that recent algebraic multilevel preconditioning solvers can accelerate the computation of a large-scale eigenvalue problem corresponding to the Anderson model of localization
by several orders of magnitude.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Centre for Scientific Computing Faculty of Science, Engineering and Medicine > Science > Physics |
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Library of Congress Subject Headings (LCSH): | Eigenvalues, Anderson model | ||||
Journal or Publication Title: | SIAM Journal on Scientific Computing | ||||
Publisher: | Society for Industrial and Applied Mathematics | ||||
ISSN: | 1064-8275 | ||||
Official Date: | 19 June 2006 | ||||
Dates: |
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Volume: | Vol.28 | ||||
Number: | No.3 | ||||
Page Range: | pp. 963-983 | ||||
DOI: | 10.1137/050637649 | ||||
Status: | Peer Reviewed | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Funder: | Swiss Commission for Technology and Innovation (CTI), Engineering and Physical Sciences Research Council (EPSRC) | ||||
Grant number: | 7036 ENS-ES (CTI), EP/C007042/1 (EPSRC) | ||||
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