Speaker
Description
Non perturbative QED is used in calculations of Schwinger pair creation, in precision QED tests with ultra-intense lasers and to predict beam backgrounds at the interaction point of colliders. In order to predict these phenomena, custom built monte carlo event generators based on a suitable non perturbative theory have to be developed. One such suitable theory uses the Furry Interaction Picture, in which a background field is taken into account non perturbatively at Lagrangian level. This theory is precise, but the transition probabilities are in general, complicated. These non perturbative processes predict unique phenomenology which will be tested in upcoming experiments. This poses a challenge for the monte carlo which struggles to implement the theory computationaly. We examine theoretical tricks to simplify the analytic form of these non perturbative transition rates. We also examine monte carlo techniques which can accurately simulate this phenomenology, including higher order processes, in a custom built program called IPstrong.
Significance
Non perturbative QED predicts novel behaviour of the vacuum in the presence of strong background field. A signature effect is Schwinger pair creations. Tests of this non perturbative theory are the subject of upcoming experiments at XFEL, SLAC and other labs
References
- A. Hartin, A. Ringwald, N. Tapia, Measuring the boiling point of the vacuum of quan-
tum electrodynamics, Phys Rev D 99, 036008 (2019). https://arxiv.org/pdf/1807.10670 - A. Hartin, Strong field QED in lepton colliders and electron/laser interactions, Int J Mod
Phys A 33, 1830011 (2018) https://arxiv.org/abs/1804.02934