A Stroll through the Loop-Tree Duality

Symmetry

Francesco Tramontano¹  Renato Maria Prisco¹  Roger José Hernández-Pinto²  German Sborlini³  Germán Rodrigo³  Judith Plenter³  Norma Selomit Ramírez-Uribe³  Andrés Ernesto Rentería-Olivo³  José de Jesús Aguilera-Verdugo³  Félix Driencourt-Mangin³  William Javier Torres Bobadilla⁴ 

[1] Dipartimento di Fisica, Università di Napoli Federico II and INFN, Sezione di Napoli, I-80126 Napoli, Italy;Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Sinaloa, Ciudad Universitaria, 80000 Culiacán, Mexico;Instituto de Física Corpuscular, Universitat de València–Consejo Superior de Investigaciones Científicas, Parc Científic, E-46980 Paterna, Spain;Max-Planck-Institut für Physik, Werner-Heisenberg-Institut, Föhringer Ring 6, D-80805 München, Germany;

关键词: Feynman integrals;    multi-loop calculations;    perturbative QFT;    higher orders;   

DOI  :  10.3390/sym13061029

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown