paper

On the energy of electric field in hydrogen atom

arXiv:0905.4506

Abstract

It is shown that hydrogen atom is a unique object in physics having negative energy of electric field, which is present in the atom. This refers also to some hydrogen-type atoms: hydrogen anti-atom, atom composed of proton and antiproton, and positronium.

arXiv commentSelf-action is never taken into account in quantum mechanics, this is really important