The Loop-Tree Duality (LTD) theorem is an innovative technique to deal with multi-loop scattering amplitudes, leading to integrand-level representations over a 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.
A stroll through the loop-tree duality / Aguilera-Verdugo, J.J., Driencourt-Mangin, F., Hernandez-Pinto, R.J., Plenter, J., Prisco, R.M., Ramirez-Uribe, N.S., Renteria-Olivo, A.E., Rodrigo, G., Sborlini, G., Torres Bobadilla, W.J., Tramontano, F.. - In: SYMMETRY. - ISSN 2073-8994. - 13:6(2021), p. 1029. [10.3390/sym13061029]
A stroll through the loop-tree duality
Prisco R. M.;Tramontano F.
2021
Abstract
The Loop-Tree Duality (LTD) theorem is an innovative technique to deal with multi-loop scattering amplitudes, leading to integrand-level representations over a 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.| File | Dimensione | Formato | |
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