Why the eigenvalues of orbital angular momentum $L$ never take half-integral values?
47173
Half-integer eigenvalues of orbital angular momentum
136678
$\hbar \rightarrow 0$ in quantum mechanics
103579
Why are the zeroth order terms in degenerate perturbation theory the eigenstates of the perturbing Hamiltonian?
133844
Numerical solution to Schrödinger equation - eigenvalues
16562
what are the eigenvalues in orthgonal matrix, How to explain?
59235
Finding eigenvalues of a differential operator
1170
How to define orbital angular momentum in other than three dimensions?
112634
Why aren't orbitals symmetric?
98535
Are eigenstates of the position operator continuous?
42225
Why can't the angular momentum vector be parallel or anti-parallel to the applied magnetic field?
29688
Why are scattering matrices unitary?
52935
Do eigenvectors of quantum operators span the whole Hilbert Space?
26125
Does the canonical commutation relation fix the form of the momentum operator?
141376
Why the dipole interaction term in the Hamiltonian has all diagonal elements to be zero in the energy eigenbasis?
21186
Why is the second order perturbative correction to the ground state energy always down?
54548
Expectation value for $\frac{1}{r}$ in the $|nlm\rangle$ state of hydrogen
139557
Why are the eigenvectors of the Laplacian of a ring graph sinusoidal?