2 papers
astro-ph.CO2026
Extending the Cosmological Collider: New Scaling Regimes and Constraints from BOSS
Daniel Green, Jiashu Han, Benjamin Wallisch
Primordial non-Gaussianity generated by additional fields during inflation offers a compelling observational target. Heavy fields imprint characteristic oscillatory signals in non-…
hep-th2025
Effective Field Theory and In-In Correlators
Daniel Green, Guanhao Sun
The predictions of inflation are usually defined in terms of equal time in-in correlation functions in an accelerating cosmological background. These same observables exist for qua…