52 citations · 71 across the 5 of their papers we have counts for
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hep-th2025★ 1 cited
Propagator positivity bounds for cosmological correlators
Mang Hei Gordon Lee, Scott Melville
Using unitarity and causality, we derive an infinite tower of two-sided positivity bounds on the effective field theory coefficients which describe the propagation of heavy fields…
hep-th2024★ 1 cited
A de Sitter S-matrix from amputated cosmological correlators
Scott Melville, Guilherme L. Pimentel
Extending scattering to states with unphysical mass values (particles ``off their mass shell'') has been instrumental in developing modern amplitude technology for Minkowski spacet…
hep-th2023★ 2 cited
A de Sitter -matrix for the masses
Scott Melville, Guilherme L. Pimentel
We define an -matrix for massive scalar fields on a fixed de Sitter spacetime, in the expanding patch co-ordinates relevant for early Universe cosmology. It enjoys many of the s…