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Free keywords:
Physics, Plasma Physics, physics.plasm-ph,High Energy Physics - Phenomenology, hep-ph
MPINP:
Research group A. Di Piazza – Division C. H. Keitel
Abstract:
If an electric charge is accelerated by a sufficiently intense
electromagnetic field, the effects of the radiation emitted by the charge on
the charge dynamics (radiation reaction) cannot be ignored. Here we show that
classical radiation-reaction effects alter qualitatively and quantitatively the
infrared behavior of the spectrum of the radiation emitted by an electron in
the presence of an intense electromagnetic plane wave (nonlinear Thomson
scattering). An exact analytical expression of the infrared limit of nonlinear
Thomson scattering is provided, which is valid to all orders within classical
electrodynamics and for an arbitrary plane wave. Apart from their own
conceptual importance and as a signature of classical radiation reaction, these
results provide the limiting expression of the corresponding and yet unknown
exact infrared behavior of strong-field QED in an intense plane wave.
