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Troubles with the radiation reaction in electrodynamics

In: Physical and Mathematical Aspects of Symmetries

Author

Listed:
  • Sofiane Faci

    (CBPF)

  • José A. Helayel-Neto

    (CBPF)

  • V. H. Satheeshkumar

    (Instituto de Física, UERJ, Departamento de Física Teórica
    Observatório Nacional)

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.

Suggested Citation

  • Sofiane Faci & José A. Helayel-Neto & V. H. Satheeshkumar, 2017. "Troubles with the radiation reaction in electrodynamics," Springer Books, in: Sergio Duarte & Jean-Pierre Gazeau & Sofiane Faci & Tobias Micklitz & Ricardo Scherer & Francesco To (ed.), Physical and Mathematical Aspects of Symmetries, pages 177-182, Springer.
    • Handle: RePEc:spr:sprchp:978-3-319-69164-0_26
    DOI: 10.1007/978-3-319-69164-0_26
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