ORCID
- Edwards, James: 0000-0001-6545-1193
Abstract
We examine the nonperturbative gauge dependence of arbitrary configuration space fermion correlators in quantum electrodynamics (QED). First, we study the dressed electron propagator (allowing for emission or absorption of any number of photons along a fermion line) using the first quantized approach to quantum field theory and analyze its gauge transformation properties induced by virtual photon exchange. This is then extended to the -point functions where we derive an exact, generalized version of the fully nonperturbative Landau-Khalatnikov-Fradkin (LKF) transformation for these correlators. We discuss some general aspects of application in perturbation theory and investigate the structure of the LKF factor about dimensions.
DOI
10.1103/PhysRevD.104.025014
Publication Date
2021-07-15
Publication Title
Physical Review D
Volume
104
Issue
2
ISSN
2470-0010
Organisational Unit
School of Engineering, Computing and Mathematics
Recommended Citation
Ahmadiniaz, N., Edwards, J., Nicasio, J., & Schubert, C. (2021) 'Generalized Landau-Khalatnikov-Fradkin transformations for arbitrary -point fermion correlators', Physical Review D, 104(2). Available at: https://doi.org/10.1103/PhysRevD.104.025014
