I Hartree-Fock / Szabo & Ostlund book

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Hartree-Fock Szabo Ostlund book
Hello everyone,

I have a large number of questions pertaining to Hartree-Fock theory, as well some things I need clarified as I go through the book,

"Modern Quantum Chemistry: Introduction to Advanced Electronic Structure Theory"​

by Attila Szabo and Neil S. Ostlund. Is this the correct forum to post in? I hope this is a book many of you will be familiar with, I need a lifeline!
 
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Hi!
Let's say that, some 20 years ago, I was familiar with it.
 
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I won't answer questions, as I seldom visit the forum, but I think the best way of understanding is to actually implement a project. I did something like that: https://github.com/aromanro/HartreeFock I think it touches everything in that book except (for now) the chapter on Green's functions. Restricted & unrestricted HF (both self-consistent and DIIS), CC & CI, Moller-Plesset preturbation theory and even more than the books covers, as it contains info only on solving the simplest Gaussian integrals.

I also have a python repository with simpler (restricted HF only, simple spherical orbitals applied on H, He, H2 stuff like that).
 
Hi. I have got question as in title. How can idea of instantaneous dipole moment for atoms like, for example hydrogen be consistent with idea of orbitals? At my level of knowledge London dispersion forces are derived taking into account Bohr model of atom. But we know today that this model is not correct. If it would be correct I understand that at each time electron is at some point at radius at some angle and there is dipole moment at this time from nucleus to electron at orbit. But how...
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