84 citations · 166 across the 6 of their papers we have counts for
6 papers
Graviton Trispectrum from Gluons
Connor Armstrong, Harry Goodhew, Arthur Lipstein +1
The tree-level wavefunction coefficient for four gravitons in de Sitter space was recently bootstrapped using the Cosmological Optical Theorem, flat space limit, and Manifestly Loc…
Enhanced Soft Limits in de Sitter Space
Connor Armstrong, Arthur Lipstein, Jiajie Mei
In flat space, the scattering amplitudes of certain scalar effective field theories exhibit enhanced soft limits due to the presence of hidden symmetries. In this paper, we show th…
New recursions for tree-level correlators in (Anti) de Sitter space
Connor Armstrong, Humberto Gomez, Renann Lipinski Jusinskas +2
We present for the first time classical multiparticle solutions in Anti de Sitter space (AdS) involving scalars, gluons, and gravitons. They are recursively defined through multipa…
Effective Field Theories and Cosmological Scattering Equations
Connor Armstrong, Humberto Gomez, Renann Lipinski Jusinskas +2
We propose worldsheet formulae for wavefunction coefficients of the massive non-linear sigma model (NLSM), scalar Dirac-Born-Infeld (DBI), and special Galileon (sGal) theories in d…
Color/Kinematics Duality in AdS
Connor Armstrong, Arthur E. Lipstein, Jiajie Mei
In flat space, the color/kinematics duality states that perturbative Yang-Mills amplitudes can be written in such a way that kinematic numerators obey the same Jacobi relations as…
On-Shell Diagrams and Supergravity Amplitudes in Momentum Twistor Space
Connor Armstrong, Joseph A. Farrow, Arthur E. Lipstein
We derive an on-shell diagram recursion for tree-level scattering amplitudes in supergravity. The diagrams are evaluated in terms of Grassmannian integrals and mome…