Structure Formation and Backreaction in Growing Neutrino Quintessence

Understand

A dependence of the neutrino masses on the dark energy scalar field could provide a solution to the why now problem of dark energy.

• The dynamics of the resulting cosmological model, growing neutrino quintessence, include an attractive force between neutrinos substantially stronger than gravity.
• We present a comprehensive approach towards an understanding of the full cosmological evolution including the formation of large-scale neutrino structures.
• Important effects we account for are local variations in the dark energy and the backreaction on the background evolution, as well as relativistic neutrino velocities.