Dynamically induced Planck scale and inflation in the Palatini formulation
Ioannis D. Gialamas, Αλέξανδρος Καράμ, Antonio Racioppi
Abstract
We study non-minimal Coleman-Weinberg inflation in the Palatini formulation of gravity in the presence of an $R^2$ term. The Planck scale is dynamically generated by the vacuum expectation value of the inflaton via its non-minimal coupling to the curvature scalar $R$. We show that the addition of the $R^2$ term in Palatini gravity makes non-minimal Coleman-Weinberg inflation again compatible with observational data.
Topics & Concepts
InflatonPhysicsInflation (cosmology)PlanckScalar curvatureTheoretical physicsMathematical physicsCurvatureAstrophysicsGeometryMathematicsCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsDark Matter and Cosmic Phenomena