Infrared problem and spatially local observables in electrodynamics

Details Infrared problem and spatially local observables in electrodynamics Infrared problem and spatially local observables in electrodynamics

2007-10-02

arxiv.org/abs/0710.0500v2

AnnalesHenriPoincare9:373-401,2008

Physics

High Energy Physics

High Energy Physics - Theory

30 pages; accepted for publication in Ann. Henri Poincare; a few minor corrections

Scientific paper

10.1007/s00023-008-0359-7

An algebra previously proposed as an asymptotic field structure in electrodynamics is considered in respect of localization properties of fields. Fields are 'spatially local' -- localized in regions resulting as unions of two intersecting (solid) lightcones: a future- and a past-lightcone. This localization remains in concord with the usual idealizations connected with the scattering theory. Fields thus localized naturally include infrared characteristics normally placed at spacelike infinity and form a structure respecting Gauss law. When applied to the description of the radiation of an external classical current the model is free of 'infrared catastrophe'.

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