A note on testing pre-inflationary times with gravitational-waves

TL;DR

This paper explores how gravitational waves from the pre-inflationary universe, modeled via loop quantum cosmology, can retain information that might be detectable today, challenging the assumption that inflation erases all early universe signals.

Contribution

It demonstrates that pre-inflationary information can leave observable imprints in gravitational wave spectra within a loop quantum cosmology framework.

Findings

Pre-inflationary information may be preserved in gravitational waves.

Inflation does not necessarily erase all early universe signals.

Potential observational signatures in gravitational wave energy spectra.

Abstract

A simple inflationary model based on loop quantum cosmology is considered. Within this framework, we show that inflation does not necessarily erase the infor- mation prior to its onset, but that such information may leave its imprint in the energy-spectrum of the gravitational-waves generated at these earliest of times.