Speaker
Description
The trajectories of relativistic particles in an intense electromagnetic field can be described by the Landau-Lifshitz equation, where the effect of radiation emission is accounted for via a self-force, and interparticle fields are often neglected as an approximation. Yet, the inclusion of interparticle fields is necessary to ensure energy-momentum conservation, particularly during coherent emission. It has been suggested that a bunch of particles radiating coherently would experience a coherently enhanced self-force. By simulating a neutral, relativistic bunch of electrons and positrons colliding with a laser pulse, we show that the inclusion of interparticle fields can significantly affect the particle dynamics primarily through the Lorentz force for the range of parameters studied. In these simulations, no coherently enhanced self-force was observed or needed to satisfy energy-momentum conservation.
