Standard Model Mass Spectrum in Inflationary Universe

TL;DR

This paper calculates the Standard Model mass spectrum during inflation with quantum corrections and examines observable effects on non-Gaussianity, providing new computational techniques for inflationary loop diagrams.

Contribution

It presents a detailed analysis of the SM mass spectrum during inflation, including quantum corrections, and introduces a method for computing inflationary loop diagrams via Wick rotation and dimensional regularization.

Findings

Quantum corrections significantly affect the SM mass spectrum during inflation.

The study links the mass spectrum to observable non-Gaussianity signatures.

A novel computational approach simplifies inflationary loop diagram calculations.

Abstract

We work out the Standard Model (SM) mass spectrum during inflation with quantum corrections, and explore its observable consequences in the squeezed limit of non-Gaussianity. Both non-Higgs and Higgs inflation models are studied in detail. We also illustrate how some inflationary loop diagrams can be computed neatly by Wick-rotating the inflation background to Euclidean signature and by dimensional regularization.