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Scattering in plane-wave backgrounds: infra-red effects and pole structure

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arxiv 1210.6840 v2 pith:UBKN2LOH submitted 2012-10-25 hep-th hep-ph

Anton Ilderton , Greger Torgrimsson This is my paper · ORCID
classification hep-thhep-ph
keywords scatteringbackgroundsinfra-redparticlepolesseriesstructureanalyse
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We consider two aspects of scattering in strong plane wave backgrounds. First, we show that the infra-red divergences in elastic scattering depend on the structure of the background, but can be removed using the usual Bloch-Nordsieck approach. Second, we analyse the infinite series of shifted-mass-shell poles in the particle (Volkov) propagator using lightfront quantisation. The complete series of poles is shown to describe a single, on-shell, propagating particle.

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  1. Graviton scattering on self-dual black holes

    hep-th 2025-07 unverdicted novelty 8.0 of 10

    Exact tree-level MHV graviton scattering amplitudes at arbitrary multiplicity are obtained on self-dual Taub-NUT backgrounds using twistor theory, including spin via Newman-Janis shift, with undeformed celestial symmetries.

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