Abstract

In an intense laser field, an electron may decay by emitting a pair of photons. The two photons emitted during the process, which can be interpreted as a laser-dressed double Compton scattering, remain entangled in a quantifiable way: namely, the so-called concurrence of the photon polarizations gives a gauge-invariant measure of the correlation of the hard gamma rays. We calculate the differential rate and concurrence for a backscattering setup of the electron and photon beam, employing Volkov states and propagators for the electron lines, thus accounting nonperturbatively for the electron-laser interaction. The nonperturbative results are shown to differ significantly compared to those obtained from the usual double Compton scattering.

Department(s)

Physics

Keywords and Phrases

Compton Scattering; Electrons; Gamma Rays; Laser Optics; Lasers; Multiphoton Processes; Photons; Intense Laser Field; Invariant Measure; Laser Interaction; Nonperturbative; Photon Beams; Photon Polarization; Two Photon; Two-photon Emission; Volkov State

International Standard Serial Number (ISSN)

1050-2947

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2009 American Physical Society (APS), All rights reserved.

Included in

Physics Commons

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