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# Light Cone 2018

14-18 May 2018
Jefferson Lab - CEBAF Center
US/Eastern timezone

## Trident pair production in lightfront quantization

17 May 2018, 17:10
20m
Auditorium (Jefferson Lab - CEBAF Center)

### Speaker

Dr Greger Torgrimsson (Theoretisch-Physikalisches Institut Friedrich-Schiller-Universität Jena; Helmholtz Institute Jena)

### Description

High-intensity lasers currently attract a great deal of interest due to the prospects of using them to study unexplored regimes of fundamental physics. Trident pair production is a basic process in this field, where an electron collides with a laser and produces an electron-positron pair. One part of this is a two-step process where the initial electron emits a real, on-shell photon that subsequently decays into an electron-positron pair, and the rest is referred to as a one-step process. We have [1] studied the split between these one- and two-step processes using lightfront quantization, motivated by the facts that in this formalism all particles are on-shell and the Hamiltonian has instantaneous terms. Apart from providing new insights into trident, this formalism has also allowed us to calculate important terms that have previously been neglected. Reference [1] V. Dinu and G. Torgrimsson, Trident pair production in plane waves: Coherence, exchange, and spacetime inhomogeneity'', Phys. Rev. D 97 (2018) 036021

### Primary authors

Dr Greger Torgrimsson (Theoretisch-Physikalisches Institut Friedrich-Schiller-Universität Jena; Helmholtz Institute Jena) Dr Victor Dinu (Department of Physics, University of Bucharest)

 Slides