4 papers
Cosmological Wavefunctions as Amplitudes: Dual Shuffle Factorization and Uniqueness from New Hidden Zeros
Yang Li, Laurentiu Rodina
We show that cosmological wavefunctions in theories naturally generalize flat-space scattering amplitudes: via a simple map from tube variables to Mandel…
Diagrammatic Derivation of Hidden Zeros and Exact Factorisation of Pion Scattering Amplitudes
Yang Li, Tianzhi Wang, Tomáš Brauner +1
Pion scattering amplitudes were recently found to vanish on specific kinematic loci, and to factorise close to these loci into a product of two lower-point amplitudes of an extende…
Hidden Zeros in Exceptional Field Theories from Double Copy
Yang Li, Diederik Roest, Tonnis ter Veldhuis
It was recently discovered by Arkani-Hamed et al and Cao et al that the colour-ordered scattering amplitudes of Tr, the non-linear sigma model and Yang-Mills-scalar vanish…
Geometric duality between effective field theories I: scattering amplitudes
Tomas Brauner, Yang Li, Diederik Roest +1
We propose a novel type of duality that connects a sequence of well-known theories with even-multiplicity scalar amplitudes: it relates the Yang-Mills theory coupled to a specific…