What is the role of $\hbar$ in quantum mechanics?
57428
Physical Interpretation of Planck's Constant
153684
In quantum mechanics, is $|\psi\rangle$ equal to $\psi(x)$?
78075
Why can I apply $HS^\dagger$ and then measure in the computational basis to measure $Y$?
66745
Mathematics for Quantum Mechanics
36262
Linear algebra for quantum physics
94627
What's wrong with this derivation that $i\hbar = 0$?
108351
Derivation of position operator in QM
143157
Perturbation theory: justifying expansion in terms of eigenstates of the basis Hamiltonian
83832
Time as a Hermitian operator in quantum mechanics
62387
What are independent parameters in Hellmann–Feynman theorem?
131906
"An operator is hermitian". Implications?
122166
Significance of $i$ in the Schrödinger equation
71105
How is Grover's operator represented as a rotation matrix?
69481
Classical limit of the path integral formulation of quantum mechanics
1491
Correct spaces for quantum mechanics
147491
When is separating the total wavefunction into a space part and a spin part possible?
13137
Why are Hermitian operators linked to observables?