414 citations · 2.3k across the 70 of their papers we have counts for
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Probing vacuum polarization effects with high-intensity lasers
Felix Karbstein
These notes provide a pedagogical introduction to the theoretical study of vacuum polarization effects in strong electromagnetic fields as provided by state-of-the-art high-intensi…
X-ray photon scattering at a focused high-intensity laser pulse
Felix Karbstein, Elena A. Mosman
We study x-ray photon scattering in the head-on collision of an XFEL pulse and a focused high-intensity laser pulse, described as paraxial Laguerre-Gaussian beam of arbitrary mode…
Boosting quantum vacuum signatures by coherent harmonic focusing
Felix Karbstein, Alexander Blinne, Holger Gies +1
We show that coherent harmonic focusing provides an efficient mechanism to boost all-optical signatures of quantum vacuum nonlinearity in the collision of high-intensity laser fiel…
An all-loop result for the strong magnetic field limit of the Heisenberg-Euler effective Lagrangian
Felix Karbstein
We provide an explicit expression for the strong magnetic field limit of the Heisenberg-Euler effective Lagrangian for both scalar and spinor quantum electrodynamics. To this end,…