amplituhedron

plural amplituhedra · plural amplituhedrons

1. quantum field theoriesA mathematical structure which encodes the integrand of an amplitude in planar N=4 super Yang-Mills theory, used in calculations of scattering amplitudes of particle interactions.

   Meronym: twistor

   3 more examples

   In another parallel universe the amplituhedron, a recent invention in quantum field theory, is a geometric form endowed with a positive Grassmannian, that is an internal arithmetical structure for the calculation of amplitudes in terms of k-planes filling up an n-dimensional space.

   2015, Yvon Gauthier, Towards an Arithmetical Logic, page 173

   The amplituhedron is not built out of spacetime and probabilities; these properties merely arise as consequences of the jewel's geometry.

   2017, Richard L. Amoroso, Universal Quantum Computing, page 486

   Scattering amplitudes that obey the laws of locality and unitarity do emerge from amplituhedra. But unlike in Feynman diagrams, the amplituhedron does not start with space-time that has these properties.

   2017 July 29, Anil Ananthaswamy, “The new shape of reality”, in New Scientist, number 3136, page 31