reducible contributions to quantum electrodynamics in external fields

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ID: 148600
2019
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Abstract
Abstract We consider one-particle reducible (1PR) contributions to QED and scalar QED processes in external fields, at one-loop and two-loop order. We investigate three cases in detail: constant crossed fields, constant magnetic fields, and plane waves. We find that 1PR tadpole contributions in plane waves and constant crossed fields are non-zero, but contribute only divergences to be renormalised away. In constant magnetic fields, on the other hand, tadpole contributions give physical corrections to processes at one loop and beyond. Our calculations are exact in the external fields and we give strong and weak field expansions in the magnetic case.
Reference Key
ahmadiniaz2019journalreducible Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Naser Ahmadiniaz;James P. Edwards;Anton Ilderton
Journal revista de la asociacion espanola de especialistas en medicina del trabajo
Year 2019
DOI
10.1007/JHEP05(2019)038
URL
http://link.springer.com/article/10.1007/JHEP05(2019)038
Keywords
radioactivity atomic energy

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