Derivation of momentum operator
26125
Does the canonical commutation relation fix the form of the momentum operator?
102564
Energy-momentum tensor transformation
128276
Quantization of orbital angular momentum
104140
Value of momentum of a particle in 1D box prepared in a particular state?
145592
Deriving the wave equation for electromagnetic waves
38839
Exponential of the differential operator
61304
Normal ordering of the commutator between annihilation and creation operator
82201
How does the momentum operator act on state kets?
26896
Why can't $ i\hbar\frac{\partial}{\partial t}$ be considered the Hamiltonian operator?
76297
What is the inverse of the $\mbox{vec}$ operator?
38359
How can one derive Schrödinger equation?
127519
How is momentum conserved in this example?
14867
How to interpret $\langle x|\hat Q|x'\rangle$ for a quantum mechanical operator $\hat Q$?
28946
Derivation of Spin Lagrangian
80627
Evolution operator for time-dependent Hamiltonian
28057
Deriving $p = mv$ from translational symmetry (momentum conservation law)?
93550
How to find the matrix representation of an operator from its action on a basis?