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Integrated unitarity for scattering amplitudes and the four-loop ladder Feynman integral

Abstract We consider multi-loop scattering amplitudes in dimensionally regularized Quantum Field Theory. We present an algorithmic way of reconstructing them from their cuts. We rely on combining modern computational methods with formal developments in discontinuities and dispersion relations. Our a...

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Bibliographic Details
Main Author: Piotr Bargieła
Format: Artigo
Language:Inglês
Published: SpringerOpen 2025-05-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP05(2025)004
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