TITLE

Combining ab initio computations, neural networks, and diffusion Monte Carlo: An efficient method to treat weakly bound molecules

AUTHOR(S)
Brown, David F. R.; Gibbs, Mark N.; Clary, David C.
PUB. DATE
November 1996
SOURCE
Journal of Chemical Physics;11/1/1996, Vol. 105 Issue 17, p7597
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We describe a new method to calculate the vibrational ground state properties of weakly bound molecular systems and apply it to (HF)2 and HF–HCl. A Bayesian Inference neural network is used to fit an analytic function to a set of ab initio data points, which may then be employed by the quantum diffusion Monte Carlo method to produce ground state vibrational wave functions and properties. The method is general and relatively simple to implement and will be attractive for calculations on systems for which no analytic potential energy surface exists. © 1996 American Institute of Physics.
ACCESSION #
7619955

 

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