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Photon-Photon Scattering at the High-Intensity Frontier: Paraxial Beams

Authors :
Holger Gies
Matthew Zepf
Alexander Blinne
Christian Kohlfürst
Felix Karbstein
Source :
Journal of physics / Conference Series 1206, 012016 (2019). doi:10.1088/1742-6596/1206/1/012016, 27th Annual International Laser Physics Workshop, LPHYS'18, Nottingham, UK, 2018-07-16-2018-07-20
Publication Year :
2018

Abstract

Our goal is to study optical signatures of quantum vacuum nonlinearities in strong macroscopic electromagnetic fields provided by high-intensity laser beams. The vacuum emission scheme is perfectly suited for this task as it naturally distinguishes between incident laser beams, described as classical electromagnetic fields driving the effect, and emitted signal photons encoding the signature of quantum vacuum nonlinearity. Using the Heisenberg-Euler effective action, our approach allows for a reliable study of photonic signatures of QED vacuum nonlinearity in the parameter regimes accessible by all-optical high-intensity laser experiments. To this end, we employ an efficient, flexible numerical algorithm, which allows for a detailed study of the signal photons emerging in the collision of focused paraxial high-intensity laser pulses. Due to the high accuracy of our numerical solutions we predict the total number of signal photons, but also have full access to the signal photons' characteristics, including their spectrum, propagation directions and polarizations. We discuss setups offering an excellent background-to-noise ratio, thus providing an important step towards the experimental verification of quantum vacuum nonlinearities.<br />7 pages, 2 figures; talk given at LPHYS'18, Nottingham, United Kingdom

Details

Language :
English
Database :
OpenAIRE
Journal :
Journal of physics / Conference Series 1206, 012016 (2019). doi:10.1088/1742-6596/1206/1/012016, 27th Annual International Laser Physics Workshop, LPHYS'18, Nottingham, UK, 2018-07-16-2018-07-20
Accession number :
edsair.doi.dedup.....04487e6196dad34d3149eb922843b48e
Full Text :
https://doi.org/10.1088/1742-6596/1206/1/012016