61 citations · 99 across the 3 of their papers we have counts for
3 papers
physics.optics2023★ 6 cited
Two-beam laser photon merging
Chantal Sundqvist, Felix Karbstein
Quasi-elastic scattering processes have long been thought of providing the most promising signal for a first experimental detection of quantum vacuum nonlinearity. A prominent exam…
hep-ph2021★ 32 cited
Vacuum birefringence at x-ray free-electron lasers
Felix Karbstein, Chantal Sundqvist, Kai S. Schulze +3
We study the perspectives of measuring the phenomenon of vacuum birefringence predicted by quantum electrodynamics using an x-ray free-electron laser (XFEL) alone. We devise an exp…
hep-ph2016★ 61 cited
Probing vacuum birefringence using x-ray free electron and optical high-intensity lasers
Felix Karbstein, Chantal Sundqvist
Vacuum birefringence is one of the most striking predictions of strong field quantum electrodynamics: Probe photons traversing a strong field region can indirectly sense the applie…