Subject: Perturbation wave function

From: "A. Boufarik" <aboufer2000(at)yahoo.ca>
Date: Mon, 25 Oct 2004 17:59:39 -0400 (EDT)

Hi all,
 
Is there any way to define a perturbation in G-03 ? 
 
What I have is in fact a point charge that I'd like to treat as a perturbing electrical field. In the classical treatment (textbooks) of perturbation theory we always rely on a projection over the full set of un-perturbed wavefunction which we don't have (in the standard Hartree Fock approach).
 
Any hints, clues, solutions, ...
 
Thanx all,
 
Boufarik

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