New- vs. chaotic-inflations

TL;DR

This paper distinguishes between new-inflation and chaotic-inflation models based on their spectral running, with new-inflation showing positive running and chaotic-inflation showing negative running.

Contribution

It provides a method to experimentally differentiate inflation models by analyzing their spectral running signatures.

Findings

New-inflation models exhibit positive spectral running.

Chaotic-inflation models typically have negative spectral running.

Spectral running ranges are quantified for chaotic models.

Abstract

We show that "spiralized" models of new-inflation can be experimentally identified mostly by their positive spectral running in direct contrast with most chaotic-inflation models which have negative runnings typically in the range of $\mathcal{O}(10^{-4}-10^{-3})$.