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Naser Ahmadiniaz
초강력 레이저과학 연구단
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Multiphoton amplitudes and generalized Landau-Khalatnikov-Fradkin transformation in scalar QED Highly Cited Paper

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Title
Multiphoton amplitudes and generalized Landau-Khalatnikov-Fradkin transformation in scalar QED
Author(s)
Naser Ahmadiniaz; Bashir, A; Schubert, C
Publication Date
2016-02
Journal
PHYSICAL REVIEW D, v.93, no.4, pp.045023 -
Publisher
AMER PHYSICAL SOC
Abstract
We apply the worldline formalism to amplitudes in scalar quantum electrodynamics involving open scalar lines, with an emphasis on their nonperturbative gauge dependence. At the tree level, we study the scalar propagator interacting with any number of photons in configuration space as well as in momentum space. At one loop we rederive, in an efficient way, the off-shell vertex in an arbitrary dimension and any covariant gauge. Generalizing the Landau-Khalatnikov-Fradkin transformation for the nonperturbative propagator, we find simple nonperturbative transformation rules for arbitrary x-space amplitudes under a change of the covariant gauge parameter in terms of conformal cross ratios. © 2016 American Physical Society
URI
http://pr.ibs.re.kr/handle/8788114/2428
DOI
10.1103/PhysRevD.93.045023
ISSN
2470-0010
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > Journal Papers (저널논문)
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