3 papers
hep-th2025
Memory Correlators and Ward Identities in the 'in-in' Formalism
Ian Moult, Sruthi A. Narayanan, Sabrina Pasterski
The symmetries of asymptotically flat spacetimes impose constraints on observables at infinity. The consequences of this have been extensively explored for S-matrix elements, where…
hep-th2025
Marginal Operators from Celestial Diamonds
Michael Imseis, Sruthi A. Narayanan, A. W. Peet
For a given conformal field theory (CFT), one can deform it via the addition of a marginal operator to the spectrum. In two dimensions, when the added operator has conformal weight…
hep-th2025
Collinear Corrections to the Cachazo-Strominger Soft Theorem
Eivind Jørstad, Sruthi A. Narayanan
Soft theorems describe the behavior of scattering amplitudes when one or several external particles are taken to be energetically soft. In tree-level gravity there are universal so…