Observational constraints on varying neutrino-mass cosmology

TL;DR

This paper investigates how varying neutrino masses in different cosmological models affect the matter power spectrum and derives observational constraints on these models.

Contribution

It introduces models with field-dependent neutrino masses and analyzes their impact on cosmological observations, providing new constraints.

Findings

Constraints on field-dependent neutrino masses from data

Impact of neutrino mass variation on matter power spectrum

Differences between minimally and non-minimally coupled neutrino models

Abstract

We consider generic models of quintessence and we investigate the influence of massive neutrino matter with field-dependent masses on the matter power spectrum. In case of minimally coupled neutrino matter, we examine the effect in tracker models with inverse power-law and double exponential potentials. We present detailed investigations for the scaling field with a steep exponential potential, non-minimally coupled to massive neutrino matter, and we derive constraints on field-dependent neutrino masses from the observational data.