Proof that total orbital angular momentum square can only take integer values of $\hbar^2$
73624
Why is orbital angular momentum quantized according to $I= \hbar \sqrt{\ell(\ell+1)}$?
37358
Spin, orbital angular momentum and total angular momentum
71187
How to prove $\hat{p}|x\rangle=i\hbar\frac{\partial}{\partial x}|x\rangle$,using $[\hat{x},\hat{p}]=i\hbar$?
157305
Full solution of the quantum particle on a ring
90475
Coordinate-free proof of $\operatorname{Tr}(AB)=\operatorname{Tr}(BA)$?
141907
Haag's theorem and practical QFT computations
12764
$\Bbb RP^2$ as the union of a Möbius band and a disc
3546
Total angular momentum of earth
71105
How is Grover's operator represented as a rotation matrix?
90818
Can't Prove formula from Sakurai's Modern QM @ Perturbation Theory
141507
Number of different possible values for the total angular momentum quantum number, $j$?
94627
What's wrong with this derivation that $i\hbar = 0$?
81879
$Av=λv$ basis proof problems
127663
Haar measure from axis-angle representation of $SO(3)$
81480
What is wrong with this deduction to show that within a multiplet different state has different square angular momentum?
141376
Why the dipole interaction term in the Hamiltonian has all diagonal elements to be zero in the energy eigenbasis?
88488
The relationship between angular and linear momentum