First order corrections to energy and wavefunctions - Perturbation Theory (Time indep. non degen)

[@NickHeumannUniversity]

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[@erasnguma3282]

You're a perfect physicist,mathematian and teacher....have been watching huddles of videos day and night until I spotted this.. it's enlightened me totally,,,thanks sir.. continue with the same Spirit..you explain well more than the books I've read

[@NickHeumannUniversity]

that's very kind of you! thanks! I'm glad, I could help!

[@charlesrotich3550]

This has been very helpful. You are perfect. ✅ 💯. Respect from KENYA

[@Amit1994-g9i]

But why do we take a linear combination for 1st order correction? How does that come up mathematically? Doesn't that tell me that the 1st order correction is also a state of the unperturbed Hamiltonian, then how does that help?

[@christiandominguez1755]

Thanks you! Incredible well explained.

[@TEMESGENMEKORO]

Thank you, before it was so difficult to me.

[@thermrm]

you are a legend

[@Artizz25]

Good explanation. In the case of a quantum harmonic oscillator if you have a perturbation term equal to x^4 you get a function of n for the first order energy correction. Namely the higher the n the higher the first order correction. How can we explain that? Does it make sense from a physical point of view?

[@Artizz25]

Hi.just a follow up on my comment. That is covered on the book of J. Cohen

[@bishwambhardas2313]

Thank you sir🙏, love from India☺.

[@monai1748]

I’m really grateful for you🙏 Thank you, may I ask where’s the video where you solve the second order correction for non-degenerate perturbation theory?

[@NickHeumannUniversity]

kzbin.info/www/bejne/gpvQemikppiAZ8U&ab_channel=NickHeumann There it is! I have playlists in my channel that you can use to navigate through my courses more easily

[@drvksau]

27.15, Instead of multiplying with psi l 0 in the bra side why can't you directly multiply with psi m zero?

[@irtazaazim3080]

Wonderful. Respect from Pakistan

[@Satabdikakati]

thank you

[@divya-c6v]

thanku sir 🙏🏻