First nonperturbative calculation in light-front QED for an arbitrary covariant gauge

Sophia S Chabysheva, John R Hiller

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

This work is the first check of gauge invariance for nonperturbative calculations in light-front QED. To quantize QED in an arbitrary covariant gauge, we use a light-front analog of the equal-time Stueckelberg quantization. Combined with a Pauli-Villars regularization, where massive, negative-metric photons and fermions are included in the Lagrangian, we are then able to construct the light-front QED Hamiltonian and the associated mass eigenvalue problem in a Fock-space representation. The formalism is applied to the dressed-electron state, with a Fock-space truncation to include at most one photon. From this eigenstate, we compute the anomalous magnetic moment. The result is found to be gauge independent, to an order in α consistent with the truncation.

Original languageEnglish (US)
Article number034001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume84
Issue number3
DOIs
StatePublished - Aug 1 2011

Fingerprint

Dive into the research topics of 'First nonperturbative calculation in light-front QED for an arbitrary covariant gauge'. Together they form a unique fingerprint.

Cite this