Neutrino Lump Fluid in Growing Neutrino Quintessence

Understand

Growing neutrino quintessence addresses the "why now" problem of dark energy by assuming that the neutrinos are coupled to the dark energy scalar field.

• The coupling mediates an attractive force between the neutrinos leading to the formation of large neutrino lumps.
• This work proposes an effective, simplified description of the subsequent cosmological dynamics.
• We treat neutrino lumps as effective particles and investigate their properties and mutual interactions.