The simplest description of charge propagation in a strong background
arXiv:2011.03757 · doi:10.1103/PhysRevD.103.036015
Abstract
Exploiting the gauge freedom associated with the Volkov description of a charge propagating in a plane wave background, we identify a new type of gauge choice which significantly simplifies the theory. This allows us to develop a compact description of the propagator for both scalar and fermionic matter, in a circularly polarised background. It is shown that many of the usually observed structures are gauge artefacts. We then analyse the full ultraviolet behaviour of the one-loop corrections for such charges. This enables us to identify and contrast the different renormalisation prescriptions needed for both types of matter.
37 pages
References in corpus (12)
- Measuring Vacuum Polarisation with High Power Lasers
- Beam-Shape Effects in Nonlinear Compton and Thomson Scattering
- Vacuum refractive indices and helicity flip in strong-field QED
- High-energy behavior of strong-field QED in an intense plane wave
- Resummation of QED radiative corrections in a strong constant crossed field
- Polarization operator for plane-wave background fields
- One-loop vertex correction in a plane wave
- Resummation of background-collinear corrections in strong field QED
- The Fermionic Propagator in an Intense Background
- Electrons in an eccentric background field
- One loop Volkov propagator in the Lorentz class of gauges
- Renormalisation of the Volkov propagator