The nonlinear evolution of large scale structures in Growing Neutrino cosmologies

TL;DR

This paper presents pioneering N-body simulations of Growing Neutrino cosmologies, revealing pulsating neutrino lumps and their effects on Cold Dark Matter structures, advancing understanding of large-scale structure evolution.

Contribution

First N-body simulations of Growing Neutrino cosmologies demonstrating pulsating neutrino lumps and their influence on dark matter structures.

Findings

Neutrino lumps pulsate due to dark energy scalar field oscillations.

Realistic distribution of neutrino halos computed.

Impact of neutrino structures on Cold Dark Matter analyzed.

Abstract

We present the results of the first N-body simulations of the Growing Neutrino scenario, as recently discussed in Baldi et al. (2011). Our results have shown for the first time how neutrino lumps forming in the context of Growing Neutrino cosmologies are expected to pulsate as a consequence of the rapid oscillations of the dark energy scalar field. We have also computed for the first time a realistic statistical distribution of neutrino halos and determined their impact on the underlying Cold Dark Matter structures.