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hep-th2024
Hidden Adler zeros and soft theorems for inflationary perturbations
Zong-Zhe Du
We derive soft theorems for on-shell scattering amplitudes from non-linearly realised global space-time symmetries, arising from the flat space and decoupling limits of the effecti…
hep-th2024
Soft Theorems for Boostless Amplitudes
Zongzhe Du, David Stefanyszyn
We consider effective field theories (EFTs) of scalar fields with broken Lorentz boosts, which arise by taking the decoupling and flat-space limits of the EFT of inflation, and der…