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Naser Ahmadiniaz
초강력 레이저과학 연구단
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Reducible contributions to quantum electrodynamics in external fields

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Title
Reducible contributions to quantum electrodynamics in external fields
Author(s)
Naser A.; Edwards J.P.; IIderton A.
Publication Date
2019-05
Journal
JOURNAL OF HIGH ENERGY PHYSICS, v.2019, no.5, pp.038 -
Publisher
SPRINGER
Abstract
© 2019, The Author(s). 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
URI
https://pr.ibs.re.kr/handle/8788114/6378
ISSN
1029-8479
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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