Inflation, Quantum Field Renormalization, and CMB Anisotropies

TL;DR

This paper discusses how incorporating quantum field renormalization into slow-roll inflation models significantly alters predictions for observable scalar and tensor power spectra in the cosmic microwave background.

Contribution

It introduces the impact of quantum field renormalization on inflationary predictions, highlighting substantial changes at observable scales.

Findings

Quantum field renormalization modifies inflationary power spectra.

Significant differences in predictions at observable wavelengths.

Implications for interpreting CMB anisotropies.

Abstract

We point out that if quantum field renormalization is taken into account the predictions of slow-roll inflation for both the scalar and tensorial power spectra change significantly for wavelengths that today are at observable scales