2 citations · 4 across the 6 of their papers we have counts for
4 papers · 1 filter
Kinematic Flow for Banana Loops and Unparticles
Tom Westerdijk, Chen Yang
We extend kinematic flow to momentum-integrated loop-level cosmological correlators, focusing on banana loops of conformally coupled scalars in power-law cosmologies and, in de Sit…
Strongly Coupled Sectors in Inflation: Gapped Theories of Unparticles
Yikun Jiang, Guilherme L. Pimentel, Chen Yang
We consider a novel scenario for a strongly coupled spectator sector during inflation, that of a higher dimensional conformal field theory with large anomalous dimensions -- ``unpa…
Strongly Coupled Sectors in Inflation: Gapless Theories and Unparticles
Guilherme L. Pimentel, Chen Yang
We compute correlation functions of the primordial density perturbations when they couple to a gapless, strongly coupled sector of spectator fields -- ``unparticles" -- during infl…
Bananas are Unparticles: Differential Equations and Cosmological Bootstrap
Tom Westerdijk, Chen Yang
We establish an exact correspondence between tree-level cosmological correlators with unparticle exchange (at integer scaling dimensions) and banana diagrams of conformally coupled…