Speaker
German Rodrigo
(IFIC UV-CSIC)
Description
We present the first comprehensive analysis of the unitarity thresholds and anomalous thresholds of scattering amplitudes at two loops and beyond based on the loop-tree duality, and show how non-causal unphysical thresholds are locally cancelled in an efficient way when the forest of all the dual on-shell cuts is considered as one. We also prove that soft and collinear singularities at two loops and beyond are restricted to a compact region of the loop three-momenta, which is a necessary condition for implementing a local cancellation of loop infrared singularities with the ones appearing in real emission; without relying on a subtraction formalism.
Authors
German Rodrigo
(IFIC UV-CSIC)
J. Jesus Aguilera Verdugo
(IFIC UV-CSIC)
Félix Driencourt-Mangin
(IFIC UV-CSIC)
Judith Plenter
(IFIC UV-CSIC)
Selomit Ramirez Uribe
(IFIC UV-CSIC)
German F. R. Sborlini
(IFIC UV-CSIC)
Dr
William J. Torres Bobadilla
(IFIC UV-CSIC)
Szymon Tracz
(IFIC UV-CSIC)
