Revisiting f(R) gravity's rainbow: Inflation and primordial fluctuations
Yoelsy Leyva, Giovanni Otalora
Abstract
Abstract We study inflation and the generation of primordial fluctuations in f ( R ) gravity's rainbow. We calculate the cosmological perturbations and then the scalar and tensor primordial power spectrum. We contrast the predictions of the model with the current observational data from PLANCK and BICEP/Keck. Particularly, we found new results for the scalar spectral index n s and the tensor-to-scalar ratio r along with new observational constraints on the rainbow functions.
Topics & Concepts
PhysicsPlanckInflation (cosmology)Spectral indexScalar (mathematics)Spectral densityTensor (intrinsic definition)AstrophysicsMathematical physicsTheoretical physicsSpectral lineAstronomyStatisticsPure mathematicsGeometryMathematicsCosmology and Gravitation TheoriesBlack Holes and Theoretical PhysicsGalaxies: Formation, Evolution, Phenomena