42:38 Thank you so much for your wonderful lecture! However, I am struggling to understand.... I do not understand the meaning of kronecker deltan1,n4 and n2n3. Why n1 and n4 / n2 and n3 should be same in case of IPA? n1 ,n3 are electrons and n2 and n4 are holes... I do not get how they should be same.... Thank you so much for your resources and help...

Very interesting lectures

Great lecture!

Throughly explaination in this lecture ,thank you!

Green line for IPA or RPA?

Thank you so much! No one on the internet could explain it easier than you! Please consider making a very short version of the video too (about 5 minutes), because in the first 5 minutes of this video, I think, your instructions will satisfy 98% of the viewers

No explanation of ML model for interatomic potential. This video does not add any knowledge for learning about ML potentials.

Thank you very much.

Now that was a clear and straightforward explanation, thank you very much!

thanks for very helpful video!

excellent report, very helpful. Thank you.

Thanks for your nice talk. Will the other talks of "Theoretical Spectroscopy Lectures" be uploaded?

The Libreoffice file of this presentation can be found here: www.attaccalite.com/lecture-notes/

Thank you very much for this tutorial. It helps me a lot to build a latex project. I expect more tutorials from you.

this is best Make file i'm seen

Thank you.

Thanks for this useful video Could you please make the same with cmake ?

Such a beautiful content for KZbin. Thank you so much for sharing this. Can I ask you some doubts about this topics by e-mail. Saludos desde Peru. Muy agradecido

Cordial greetings I am an undergraduate student, I am doing the thesis in TDDFT. I would like to see the demonstration, thank you.

Aweome, my last name is also Sottile and I love physics, specially QFT so I find this quite interesting!

Hi and thank you for your great and very instructive video ! I think I am missing something. What's the use -- when producing targz or zip -- to do make all before make clean, as make clean would delete all files produced by make all, including article.pdf, knowing that make all -- if I understood correctly -- would not produce final.pdf ?

Thanks for uploading! By the way, are there typos in the slides that "Lehman" should be "Lehmann", and "Koopman's " should be "Koopmans' "?

Excellent course and such a great pleasure to see what I call "theoretical chemistry family" all online! Willing to see next lessons <3