Degenerate perturbation theory
= Degenerate perturbation theory
{wiki}
First-order degenerate perturbation theory diagonalizes the perturbing operator within each degenerate eigenspace of the unperturbed Hamiltonian.
= Degenerate perturbation theory
{wiki}
First-order degenerate perturbation theory diagonalizes the perturbing operator within each degenerate eigenspace of the unperturbed Hamiltonian.