New posts in Eigenvalue

Troubles in Dirac's "Principles of quantum mechanics"

Why do we care about the spectrum of the Hamiltonian?

Common eigenfunctions of commuting operators: case of degeneracy

Meaning of degeneracy in Quantum Mechanics

What does it mean for an operator to have both a continuous and discrete spectrum?

For $[A,B]=0$, if an eigenfunction of $A$ not an eigenfunction of $B$, does that imply degeneracy of one operator?

What is the spectrum of $\hat x \hat p + \hat p \hat x$?

Something special about energy eigenstates when it comes to time evolution?

Why is the ground state energy of particle in a box not zero?

How do we know that we have captured the entire spectrum of the Harmonic Oscillator by using ladder operators?