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SYSF: Symposium Quantum Physics in Strong Fields

SYSF 1: Quantum Physics in Strong Fields

SYSF 1.2: Hauptvortrag

Dienstag, 9. September 2025, 11:25–12:05, ZHG104

Strong fields and fundamental physics — •Anton Ilderton — Higgs Centre, University of Edinburgh, UK

Strong electromagnetic fields are produced by modern intense laser systems, are found in astrophysical environments, and can be created in collisions of dense particle bunches.

Such strong fields are essentially classical, yet they can be used to probe quantum physics, including properties of the quantum vacuum itself, through processes such as vacuum birefringence. There are even hints that in sufficiently strong fields, quantum electrodynamics may behave very differently compared to how we understand it today.

In this talk I will give an overview of some current activities in the use of strong fields to study fundamental physics, both in electrodynamics and in gravity, where strong-field methods can be applied to the scattering of black holes in the extreme-mass-ratio regime.

Keywords: strong fields; QFT; intense lasers