Four-loop scattering amplitudes through the loop-tree duality
Keywords:Feynman diagrams; N4MLT
A general outlook is presented on the study of multiloop topologies appearing for the first time at four loops. A unified description and representation of this family is provided, the so-called N4MLT universal topology. Based on the Loop-Tree Duality framework, we discuss the dual opening of this family and expose the relevance of a causal representation. We explore an alternative procedure for the search of causal singular configurations of selected N4MLT Feynman diagrams through the application of a modified Grover's quantum algorithm.
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