A powerful procedure for optimizing AGP states

H. J. Aa. Jensen*, B. Weiner, J. V. Ortiz, Y. Öhrn

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We present a powerful iterative algorithm for optimizing the geminal coefficients of an antisymmetrized geminal power (AGP) wavefunction. The algorithm is based on the lowest eigenvector of a matrix closely related to the Hessian of the problem. This matrix can be derived either by using Euler's theorem or by utilizing a unitary group approach. Two important features of the scheme are that it will always converge towards a minimum and that in the neighborhood of a minimum it is comparable to a quadratically convergent Newton‐Raphson method.

Original languageEnglish
JournalInternational Journal of Quantum Chemistry
Volume22
Issue number16 S
Pages (from-to)615-631
Number of pages17
ISSN0020-7608
DOIs
Publication statusPublished - 1. Jan 1982

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