Analyzing WMAP Observation by Quantum Gravity

TL;DR

This paper explores how a renormalizable quantum gravity model can explain the cosmic microwave background observations from WMAP, linking early universe inflation to quantum gravity effects.

Contribution

It introduces a quantum gravity-based evolution model that fits WMAP data, connecting inflationary transition to standard cosmology.

Findings

Quantum gravity model fits WMAP data well.

Identifies a dynamical energy scale around 10^{17} GeV.

Proposes a transition from inflation to big bang in quantum gravity context.

Abstract

The angular power spectra of cosmic microwave background are analyzed under the light of the evolutional scenario of the universe based on the renormalizable quantum theory of gravity in four dimensions. The equation of evolution is solved numerically fixing the power law spectrum predicted by the conformal gravity for the initial condition. The equation requires to introduce a dynamical energy scale about 10^{17}GeV, where the inflationary space-time evolution makes a transition to the big-bang of the conventional Friedmann universe. The quality of fit to the three-year data of WMAP implies the possibility to understand the observation by quantum gravity.