Lecture 7: More on Energy Eigenstates

MIT 8.04 Quantum Physics I, Spring 2013
Instructor: Allan Adams

In this lecture, Prof. Adams outlines how to use energy eigenfunctions to conveniently solve quantum mechanical problems involving time evolution. He then discusses various properties and features of energy eigenfunctions and their superpositions.

License: Creative Commons BY-NC-SA

[timseguine]

I took 3 semesters of graduate level mathematical quantum physics, so I already understand the mathematics a lot better than it is presented here, but the amount of physical insight provided in this lecture series is amazing.

[lorenzomag]

Last year, I took Quantum Physics courses at my university. Now, by watching these videos, I am understanding what they passionlessly tried to explain in those courses.

Thanks! :D

[yingxu]

the last 15 mins of the graph about allowed region and forbidden region saved my life. my prof never analyze the formula and derive the graph. allan adams is amazing.

[peterwan]

The quick questions part is most amazing. It shows how difficult it is to really understand the subject. Great work.

[mhamadhantro]

At 14:31, where the subtitles says:[INAUDIBLE], I think the guy in the audience said: "do we ever find discretization for position".
And thank you for uploading such amazing lectures!

[DebGoswami]

He gets an applause in every lecture! Just amazing!

[gmcenroe]

This instructor is so good, just amazing.

[atithi]

The ending is better than that of an episode of Breaking Bad!!

[alexpalacios]

Man I wish I would’ve watched these videos when I took my physical chemistry coursework lol 😂 it all makes sense now! I always thought my professors were crazy trying to explain this to us.

[tatiana]

Hey MIT, any chance of posting the rest of the lecture notes? The site provides just the first eight... Thanks anyway for the great initiative!!

[canadwinner]

it all makes sense now! I always thought my professors were crazy trying to explain this to us.

[paulie]

Can I add my own "thank you AV person" ... clear crisp audio, clear crisp video... nice.

[nostrocrompt]

Perfect title. When I watch this I truly feel like a More on.

[CHistrue]

I watched this after a touch of dinner liqueur and I finally understand quantum physics!  I better enjoy it while it lasts.

[coltonboxell]

The really blew my mind at the end, I was like woah dude.

[DavidGillooly]

A really nice set of lectures. I am up to #7 so far.

I am not sure all the lecture notes will be available though. They use three reference books for the class. Must cost the MIT students a fortune!

[fawzyhegab]

Inspiring :) Thanx for sharing knowledge and make it accessible for everyone around the world :)

[yyc]

The solution to the SE near the end of the class (~1:04:00) is quite intuitive and inspiring.

[TECH_AI_WITH_FUN]

Beauty of physics to discribes unknown things .
♥️♥️♥️

[IronCharioteer]

This vid series is a wonderful supplement to my textbook (Griffiths). While Griffiths lays out proofs relatively clearly he seems to side step a lot of the physical meaning of the equations. And though the appendix gives a refresher on linear algebra, I find that it too fails to attach the math to physical meaning. Its really easy to get very deep into methods for solving systems while forgetting the physical interpretation of the methods and solutions. This vid series corrects that.