The physical propagator of a slowly moving charge

Emili Bagan, Martin Lavelle, David McMullan

Research output: Contribution to journalArticleResearchpeer-review

7 Citations (Scopus)

Abstract

We consider an electron which is electromagnetically dressed in such a way that it is both gauge invariant and that it has the associated electric and magnetic fields expected of a moving charge. We study the propagator of this dressed electron and, for small velocities, show explicitly at one loop that at the natural (on-shell) renormalisation point, p0 = m, p = mv, one can renormalise the propagator multiplicatively. Furthermore the renormalisation constants are infra-red finite. This shows that the dressing we use corresponds to a slowly moving, physical asymptotic field.
Original languageEnglish
Pages (from-to)128-134
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume370
Issue number1-2
DOIs
Publication statusPublished - 7 Mar 1996

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