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arXiv · 2104.14621

A stroll through the loop-tree duality

Jesús Aguilera-Verdugo·Félix Driencourt-Mangin·Roger J. Hernández-Pinto·Judith Plenter·Renato Maria Prisco·Selomit Ramírez-Uribe·Andrés Rentería-Olivo·Germán Rodrigo·German Sborlini·William J. Torres Bobadilla·Francesco Tramontano
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Abstract

The Loop-Tree Duality (LTD) theorem is an innovative technique to deal with multi-loop scattering amplitudes, leading to integrand-level representations over an Euclidean space. In this article, we review the last developments concerning this framework, focusing on the manifestly causal representation of multi-loop Feynman integrals and scattering amplitudes, and the definition of dual local counter-terms to cancel infrared singularities.

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Jesús Aguilera-Verdugo, Félix Driencourt-Mangin, Roger J. Hernández-Pinto, Judith Plenter, Renato Maria Prisco, Selomit Ramírez-Uribe, Andrés Rentería-Olivo, Germán Rodrigo, German Sborlini, William J. Torres Bobadilla, Francesco Tramontano. 2021-04-29. A stroll through the loop-tree duality. https://arxiv.org/abs/2104.14621

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