- #36
meopemuk
- 1,766
- 64
rewebster said:Well---it's not hidden anymore
are you looking at a specific facet, or the entire thing?
My starting point is the recognition that quantum electrodynamics (QED) is the most accurate theory of electromagnetic phenomena. So, the goal is to derive classical electrodynamics as a classical limit of QED. The major obstacle on this path is renormalization of QED, which makes its Hamiltonian infinite and ill-defined. I was able to overcome this obstacle by using the so-called "dressed particle" approach to quantum field theories:
E.V. Stefanovich "Quantum field theory without infinities", Ann. Phys. (NY) 292 (2001),139
E. V. Stefanovich, "Relativistic quantum dynamics", http://www.arxiv.org/abs/physics/0504062
The emerging classical limit is quite different from Maxwell's electrodynamics. For example, instead of the Lorentz force law it predicts that charged particles interact via instantaneous Darwin's potentials. I am now trying to figure out if this approach can lead to experimentally verifiable differences from Maxwell's theory. One interesting difference is that Darwin's potentials predict additional magnetic repulsive forces between electrons in current-carrying wires. It seems that there are experiments demonstrating exactly that
N. Graneau, T. Phipps Jr, D. Roscoe An experimental confirmation of longitudinal electrodynamic forces. EUROP. PHYS. J D, 15, (2001) 87 - 97
Eugene.