This question already has an answer here:
- Bound states in QED 2 answers
We can solve the Schrodinger equation for the Hamiltonian operator from the classical Hamiltonian of hydrogen bound state, consisting of proton and electron attracting each other electrodynamically, to get the eigenfunction, which is corresponding to stationary bound state we wanted to find.
But It must also be possibly explained through QED, but maybe rather complicated way. I can't even imagine the way it does. Could anyone explain it for me possibly qualitatively?