- #1
broegger
- 257
- 0
Two quick ones :)
Hi, two questions:
1) How can I find the expectation value of the x-component of the angular momentum, [tex]\langle L_x \rangle[/tex], when I know [tex]\langle L^2 \rangle[/tex] and [tex]\langle L_z \rangle[/tex]?
2) Say, I have a state [tex]|\Psi \rangle[/tex] and two operators A and B represented as matrices. Now, [tex]|\Psi \rangle[/tex] is given as a linear combination of the eigenstates of A and I want to express them as a linear combination of the eigenstates of the operator B instead. How do I do that?
Thanks :)
Hi, two questions:
1) How can I find the expectation value of the x-component of the angular momentum, [tex]\langle L_x \rangle[/tex], when I know [tex]\langle L^2 \rangle[/tex] and [tex]\langle L_z \rangle[/tex]?
2) Say, I have a state [tex]|\Psi \rangle[/tex] and two operators A and B represented as matrices. Now, [tex]|\Psi \rangle[/tex] is given as a linear combination of the eigenstates of A and I want to express them as a linear combination of the eigenstates of the operator B instead. How do I do that?
Thanks :)