Electromagnetic fields of a massless particle and the eikonal

Details Electromagnetic fields of a massless particle and the eikonal Electromagnetic fields of a massless particle and the eikonal

1991-12-09

arxiv.org/abs/hep-th/9112020v1

Phys.Lett.B277:148-152,1992

Physics

High Energy Physics

High Energy Physics - Theory

9 pages

Scientific paper

10.1016/0370-2693(92)90971-6

Electromagnetic fields of a massless charged particle are described by a gauge potential that is almost everywhere pure gauge. Solution of quantum mechanical wave equations in the presence of such fields is therefore immediate and leads to a new derivation of the quantum electrodynamical eikonal approximation. The elctromagnetic action in the eikonal limit is localised on a contour in a two-dimensional Minkowski subspace of four-dimensional space-time. The exact S-matrix of this reduced theory coincides with the eikonal approximation, and represents the generalisatin to electrodynamics of the approach of 't Hooft and the Verlinde's to Planckian scattering.

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