Inflationary back-reaction effects from Relativistic Quantum Geometry

TL;DR

This paper investigates how quantum geometrical effects influence scalar metric fluctuations during inflation, using a novel formalism that aligns well with observational data.

Contribution

It introduces a non-perturbative variational formalism to analyze quantum geometrical effects on inflationary fluctuations, providing predictions consistent with observations.

Findings

Spectral predictions match observational data

Quantum geometrical effects influence inflation dynamics

Formalism offers a new approach to quantum gravity in cosmology

Abstract

We study the dynamics of scalar metric fluctuations in a non-perturbative variational formalism recently introduced, by which the dynamics of an geometrical scalar field $\theta$, describes the quantum geometrical effects on a Weylian-like manifold with respect to a background Riemannian space-time. In this letter we have examined an example in the framework of inflationary cosmology. The resulting spectral predictions are in very good agreement with observations and other models of inflation.