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Browsing by Author "Damgaard, David"
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Kleiss-Kuijf relations from momentum amplituhedron geometry
Damgaard, David; Ferro, Livia; Lukowski, Tomasz; Moerman, Robert (2021-07-16)Abstract: In recent years, it has been understood that color-ordered scattering amplitudes can be encoded as logarithmic differential forms on positive geometries. In particular, amplitudes in maximally supersymmetric ... -
The Momentum Amplituhedron
Damgaard, David; Ferro, Livia; Lukowski, Tomasz; Parisi, Matteo (2019-08-08)In this paper we define a new object, the momentum amplituhedron, which is the long sought-after positive geometry for tree-level scattering amplitudes in N = 4 super Yang-Mills theory in spinor helicity space. Inspired ... -
Momentum Amplituhedron meets Kinematic Associahedron
Damgaard, David; Ferro, Livia; Lukowski, Tomasz; Moerman, Robert (2021-02-03)In this paper we study a relation between two positive geometries: the momen- tum amplituhedron, relevant for tree-level scattering amplitudes in N = 4 super Yang-Mills theory, and the kinematic associahedron, encoding ...