42 citations · 43 across the 5 of their papers we have counts for
6 papers
Conformal Anomalies and Generalised Energy Conservation in De Sitter Spacetime
Zong-Zhe Du
We show that for bulk discrete series fields whose dual operators have integer conformal dimensions, the Generalised Energy Conservation (GEC) condition for de Sitter (dS) scatteri…
Soft unification of exceptional effective field theories in de Sitter space
Zong-Zhe Du
We uncover a surprising universal soft behaviour (USB) of a de Sitter (dS) S-matrix for \textit{all} exceptional effective field theories (EFTs) in dS space, stemming from the rece…
New Exceptional EFTs in de Sitter Space from Generalised Energy Conservation
Zong-Zhe Du, David Stefanyszyn
We discover a surprising relationship between exceptional effective field theories (EFTs) in de Sitter space and a notion of \textit{generalised energy conservation} (GEC) of an S-…
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…
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…
Triple crossing positivity bounds for multi-field theories
Zong-Zhe Du, Cen Zhang, Shuang-Yong Zhou
We develop a formalism to extract triple crossing symmetric positivity bounds for effective field theories with multiple degrees of freedom, by making use of symmetric dispers…