Mass freezing in growing neutrino quintessence

Abstract

Growing neutrino quintessence solves the coincidence problem for dark energy by a growing cosmological value of the neutrino mass which emerges from a cosmon-neutrino interaction stronger than gravity. The cosmon-mediated attraction between neutrinos induces the formation of large scale neutrino lumps in a recent cosmological epoch. We argue that the non-linearities in the cosmon field equations stop the further increase of the neutrino mass within sufficiently dense and large lumps. As a result, we find the neutrino induced gravitational potential to be substantially reduced when compared to linear extrapolations. We furthermore demonstrate that inside a lump the possible time variation of fundamental constants is much smaller than their cosmological evolution. This feature may reconcile current geophysical bounds with claimed cosmological variations of the fine structure constant.

15 pages, 12 figures. Version published in PRD

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• Oscillating nonlinear large scale structure in growing neutrino quintessence
• Modified gravity and coupled quintessence
• Neutrino Lump Fluid in Growing Neutrino Quintessence
• Nonlinear growing neutrino cosmology
• Reappraisal of the limit on the variation in $\alpha$ implied by Oklo
• Forecasting cosmological parameter constraints from near-future space-based galaxy surveys
• Neutrino generated dynamical dark energy with no dark energy field
• Early dark energy constraints on growing neutrino quintessence cosmologies
• Observational Constraints on Early Coupled Quintessence
• Backreaction in Growing Neutrino Quintessence
• Relaxing cosmological constraints on current neutrino masses
• Avoiding parameter fine-tuning in mass varying neutrino models of DE?
• The cosmological Mass Varying Neutrino model in the late universe