Abstract.
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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Communicated by Klaus Fredenhagen.
Submitted: May 14, 2007. Accepted: October 2, 2007.
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Herdegen, A. Infrared Problem and Spatially Local Observables in Electrodynamics. Ann. Henri Poincaré 9, 373–401 (2008). https://doi.org/10.1007/s00023-008-0359-7
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DOI: https://doi.org/10.1007/s00023-008-0359-7