Energy and momentum eigenfunctions

1. Mar 26, 2007

UrbanXrisis

just a general and quick question because I'm making a formula sheet for my test tomorrow:

What is the energy eigenfunction for a free particle and what is the momentum eigenfunction for a particle in a box?

2. Mar 27, 2007

quasar987

Why are you asking?!? If you're taking a QM class, surely you've covered these things in class and they are in your textbook!

3. Mar 27, 2007

UrbanXrisis

i skipped QM and went into quantum theory so i never went over this. this isnt talked about in my book. all i need to know is the energy eigenfuction for a free particle please? Oh and momentum eigenvalues for a particle in a box?

Last edited: Mar 27, 2007
4. Mar 27, 2007

quasar987

5. Mar 27, 2007

UrbanXrisis

so i've went there already, and coundt find them, which is why i'm asking on this forum. maybe i just cant spot them out?

6. Mar 27, 2007

christianjb

That's an interesting Q though.

What are the momentum eigenfunctions of a particle in a box? The FT of the waves between the walls must look a bit weird.