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Detectable Optical Signatures of QED Vacuum Nonlinearities Using High-Intensity Laser Fields

by Leonhard Klar 1,2
1
Theoretisch-Physikalisches Institut, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
2
Helmholtz-Institut Jena, Fröbelstieg 3, 07743 Jena, Germany
Particles 2020, 3(1), 223-233; https://doi.org/10.3390/particles3010018
Received: 30 December 2019 / Revised: 24 February 2020 / Accepted: 25 February 2020 / Published: 6 March 2020
Up to date, quantum electrodynamics (QED) is the most precisely tested quantum field theory. Nevertheless, particularly in the high-intensity regime it predicts various phenomena that so far have not directly been accessible in all-optical experiments, such as photon-photon scattering phenomena induced by quantum vacuum fluctuations. Here, we focus on all-optical signatures of quantum vacuum effects accessible in the high-intensity regime of electromagnetic fields. We present an experimental setup giving rise to signal photons distinguishable from the background. This configuration is based on two optical pulsed petawatt lasers: one generates a narrow but high-intensity scattering center to be probed by the other one. We calculate the differential number of signal photons attainable with this field configuration analytically and compare it with the background of the driving laser beams. View Full-Text
Keywords: strong-field QED; high-intensity lasers; quantum vacuum; nonlinear effects strong-field QED; high-intensity lasers; quantum vacuum; nonlinear effects
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Klar, L. Detectable Optical Signatures of QED Vacuum Nonlinearities Using High-Intensity Laser Fields. Particles 2020, 3, 223-233.

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