Large-field inflation and the cosmological collider
Matthew Reece, Lian-Tao Wang, Zhong-Zhi Xianyu
Abstract
The authors study the signature of heavy spectator fields (``cosmological collider signal'') that couple to the inflaton for the case of large-field inflation with order ${M}_{\mathrm{Plank}}$ excursion of the inflaton. Motivated by the so-called swampland distance conjecture, they consider exponentially time-dependent masses and show that the resulting scale dependence of the bispectrum can be an informative probe for general properties of different classes of inflation.
Topics & Concepts
Inflation (cosmology)PhysicsColliderField (mathematics)Particle physicsTheoretical physicsMathematicsPure mathematicsCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsRelativity and Gravitational Theory