Quantum 2025 – wissenschaftliches Programm

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TUE: Tuesday Contributed Sessions

TUE 3: Quantum Field Theory

TUE 3.5: Vortrag

Dienstag, 9. September 2025, 15:15–15:30, ZHG003

A short review of the worldline approach to strong-field QED — •Christian Schubert — Facultad de Ciencias Físico-Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Avenida Francisco J. Mújica, 58060 Morelia, Michoacán, Mexico

The worldline formalism offers an alternative to the standard Feynman diagram approach in QED that has been found particularly efficient for processes in external field, primarily because it avoids the segmenting of fermion lines or loops into individual propagators. Here I will give a short summary of the method and its present range of applications, with examples ranging from Schwinger pair creation in various types of electric fields to photon-graviton conversion in a magnetic field.

Keywords: worldline formalism; strong-field; pair creation; string-inspired; photon-graviton conversion