7 papers
Back-reflection in dipole fields and beyond
Maksim Valialshchikov, Felix Karbstein, Daniel Seipt +1
Quantum reflection is a fascinating signature of the quantum vacuum that emerges from inhomogeneities in the electromagnetic fields. In pursuit of the prospective real-world implem…
Leading low-temperature correction to the Heisenberg-Euler Lagrangian
Felix Karbstein
In this note, we show that the well-known leading low-temperature correction to the Heisenberg-Euler Lagrangian in a constant electromagnetic field arising at two loops can be effi…
One loop photon-graviton mixing in an electromagnetic field: Part 3
Naser Ahmadiniaz, Fiorenzo Bastianelli, Felix Karbstein und Christian Schubert
Photon-graviton conversion in an electromagnetic field is a well-known prediction of Einstein-Maxwell theory. First discussed at tree-level by Gertsenshtein in 1962, more recently…
Simulating vacuum birefringence with a diffractive beam propagation code
Aimé Matheron, Michal Å mÃd, Matt Zepf +1
Ninety years after their prediction, quantum vacuum nonlinearities in macroscopic electromagnetic fields still await a direct experimental verification in the laboratory. A particu…
Limitations of the paraxial beam model in the study of quantum vacuum signals
Felix Karbstein, Fabian Schütze
Studies of nonlinear quantum vacuum signals often model the driving laser fields as paraxial beams. This in particular holds for analytic approaches. While this allows for reliable…
The Darkfield Approach to Measuring Vacuum Birefringence and Light-by-Light Couplings -- A Proof-of-Principle Experiment
Michal SmÃd, Pooyan Khademi, Carsten Bähtz +29
Vacuum fluctuations give rise to effective nonlinear interactions between electromagnetic fields. These generically modify the characteristics of light traversing a strong-field re…