# What is the difference between photons in the E-Field and the H-Field?

It is well established that the photon is the propagator for the electromagnetic force. How are the set of photons used in the H-field behaving differently than those in the E-field? Is it different when dealing with an electromagnet versus an intrinsic magnet?

In what way do the photons need to be emitted by a bar magnet to result in a magnetic interaction? How about a charged object to interact with a charged object?

• The so called off the mass shell virtual photons are just the Fourier components of the potential. For a static electric field this is the Coulomb potential $A^0$ and for a static magnetic field the vector potential $\vec A$. This leads you to my answer.@finesagan – my2cts Aug 27 '18 at 15:58