I Hartree-Fock / Szabo & Ostlund book

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The discussion centers around questions related to Hartree-Fock theory and the book "Modern Quantum Chemistry: Introduction to Advanced Electronic Structure Theory" by Szabo and Ostlund. A user seeks clarification on concepts from the book and confirms that implementing a project can enhance understanding of the material. Another participant shares their experience with a GitHub project that covers various aspects of Hartree-Fock theory, including restricted and unrestricted methods, coupled cluster theory, and Moller-Plesset perturbation theory. They also mention a simpler Python repository focused on basic applications of Hartree-Fock. Overall, the conversation emphasizes the value of practical implementation in mastering complex quantum chemistry concepts.
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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).
 
A relative asked me about the following article: Experimental observation of a time rondeau crystal https://www.nature.com/articles/s41567-025-03028-y I pointed my relative to following article: Scientists Discovered a Time Crystal That Reveals a New Way to Order Time https://www.yahoo.com/news/articles/scientists-discovered-time-crystal-reveals-180055389.html This area is outside of my regular experience. I'm interested in radiation effects in polycrystalline material, i.e., grain...

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