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Vectorizable algorithm for green function and many-body perturbation methods

✍ Scribed by Vyacheslav G. Zakrzewski; Wolfgang von Niessen

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
619 KB
Volume
14
Category
Article
ISSN
0192-8651

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✦ Synopsis

The principles of an efficient, fast algorithm for the calculation of diagrams appearing in Green function and many-body perturbation methods are discussed and timing examples are given. Within the suggested algorithm, the third order-diagrams required in the Green function approach are evaluated by arranging computations in such a way that the most inner loops contain only simple scalar products and multiplication of vector by scalar operations. The molecular symmetry is taken into account for abelian groups.

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