Restricted Hartree–Fock approximation. I. Techniques for the energy minimization
- 1 March 1983
- journal article
- research article
- Published by Wiley in Journal of Computational Chemistry
- Vol. 4 (1) , 33-40
- https://doi.org/10.1002/jcc.540040106
Abstract
We present a new procedure for direct minimization of the RHF energy, which presents advantages over SCF methods with respect to convergence rate and computational cost. In this procedure we combine several techniques with the aim of obtaining best directions and step lengths for the iterative search for a minimum of the energy. In this article we develop the theory. Therefore, we analyze the variational function; we present a short description of the minimization techniques and we discuss in detail the way in which they are to be used. The computational aspects of the procedure will be treated in the following article.Keywords
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