Born renormalization in classical Maxwell electrodynamics

Abstract

We define and compute the renormalized four-momentum of the composed physical system: classical Maxwell field interacting with charged point particles. As a `reference' configuration for the field surrounding the particle, we take the Born solution. Unlike in the previous approach [Gen. Relat. Grav. 26 (1994) 167; Acta Phys. Pol. A 85 (1994) 771; Commun. Math. Phys. 198 (1998), 711], based on the Coulomb `reference', a dependence of the four-momentum of the particle (`dressed' with the Born solution) upon its acceleration arises in a natural way. This will change the resulting equations of motion. Similarly, we treat the angular momentum tensor of the system.