Impact of dynamical collapse models on inflationary cosmology

TL;DR

This paper investigates how dynamical collapse models, which address the quantum measurement problem, affect inflationary cosmology, finding that their corrections to the power spectrum are negligible for typical parameters.

Contribution

It provides the first analysis of dynamical collapse models' impact on inflationary power spectra, showing minimal effects for standard parameter choices.

Findings

Corrections to the power spectrum are negligible for typical collapse parameters.

Dynamical collapse models do not significantly alter inflationary predictions.

The study constrains the influence of collapse models on early universe cosmology.

Abstract

Inflation solves several cosmological problems at the classical and quantum level, with a strong agreement between the theoretical predictions of well-motivated inflationary models and observations. In this work, we study the corrections induced by dynamical collapse models, which phenomenologically solve the quantum measurement problem, to the power spectrum of the comoving curvature perturbation during inflation and the radiation dominated era. We find that the corrections are strongly negligible for the reference values of the collapse parameters.