Ah - I didn't realize that 1 & 2 correspond to different states, I thought they were just numbers. It all makes sense now, and if I'm right the answer should be zero.
Thanks!
I've looked through all my course notes, but I just don't even know where to start with this problem.
The problem:
\langle 1 \mid x^2 \mid 2 \rangle
Use the annihilation and creation form for x to obtain the above matrix element.
What I do know:
I know that x = \sqrt{\hbar /...
Homework Statement
A single rectangular loop is placed distance C from a wire of current I. The dimensions of the loop are BxA.
The loop and wire both lie in the same plane, and a is at right angles to I.
Derive an expression for the mutual inductance, given that you found flux in a previous...