3 papers
hep-th2024
Positive and Negative Ladders in Loop Space
Ross Glew, Tomasz Lukowski
Motivated by a new term-wise factorised formula for the two-loop MHV integrand for scattering amplitudes in super Yang-Mills (SYM), together with recent results for…
hep-th2024
The Two-loop MHV Momentum Amplituhedron from Fibrations of Fibrations
Livia Ferro, Ross Glew, Tomasz Lukowski +1
Recently, a new approach to computing the canonical forms of the momentum amplituhedron in dual-momentum space was proposed by the authors. These are relevant for the integrands of…
hep-th2023
Prescriptive Unitarity from Positive Geometries
Livia Ferro, Ross Glew, Tomasz Lukowski +1
In this paper, we define the momentum amplituhedron in the four-dimensional split-signature space of dual momenta. It encodes scattering amplitudes at tree level and loop integrand…