Efficient implementation of the Lanczos method for magnetic systems
| Autor(en): | Schnack, Juergen Hage, Peter Schmidt, Heinz-Juergen |
Stichwörter: | basis coding; Computer Science; Computer Science, Interdisciplinary Applications; HEISENBERG-MODEL; Lanczos diagonalization; parallelization; Physics; Physics, Mathematical; RENORMALIZATION-GROUP; spin systems | Erscheinungsdatum: | 2008 | Herausgeber: | ACADEMIC PRESS INC ELSEVIER SCIENCE | Journal: | JOURNAL OF COMPUTATIONAL PHYSICS | Volumen: | 227 | Ausgabe: | 9 | Startseite: | 4512 | Seitenende: | 4517 | Zusammenfassung: | Numerically exact investigations of interacting spin systems provide a major tool for an understanding of their magnetic properties. For medium size systems the approximate Lanczos diagonalization is the most common method. In this article we suggest two improvements: efficient basis coding in subspaces and simple restructuring for openMP parallelization. (C) 2008 Elsevier Inc. All rights reserved. |
ISSN: | 00219991 | DOI: | 10.1016/j.jcp.2008.01.027 |
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