Troubles with the radiation reaction in electrodynamics

Sofiane Faci (), José A. Helayel-Neto () and V. H. Satheeshkumar ()
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Sofiane Faci: CBPF
José A. Helayel-Neto: CBPF
V. H. Satheeshkumar: Instituto de Física, UERJ, Departamento de Física Teórica

A chapter in Physical and Mathematical Aspects of Symmetries, 2017, pp 177-182 from Springer

Abstract: Abstract The dynamics of a radiating charge is one of the oldest unsettled problems in classical physics. The standard Lorentz-Abraham-Dirac (LAD) equation of motion is known to suffer from several pathologies and ambiguities. This paper briefly reviews these issues, and reports on a new model that fixes these difficulties in a natural way. This model is based on a hypothesis that there is an infinitesimal time delay between action and reaction. This can be related to Feynman’s regularization scheme, leading to a quasi-local QED with a natural UV cutoff, hence without the need for renormalization as the divergences are absent. Besides leading to a pathology-free equation of motion, the new model predicts a modification of the Larmor formula that is testable with current and near future ultra-intense lasers.

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-319-69164-0_26

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DOI: 10.1007/978-3-319-69164-0_26

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