Neutrino Lump Fluid in Growing Neutrino Quintessence

Abstract

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. The neutrino lump fluid behaves as cold dark matter coupled to dark energy. The methods developed here may find wider applications for fluids of composite objects.

11 pages, 6 figures

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• Growing Matter
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Cited by in corpus (8)

• Primordial black holes from long-range scalar forces and scalar radiative cooling
• Quintessential inflation: A tale of emergent and broken symmetries
• Dynamics of neutrino lumps in growing neutrino quintessence
• A new take on the inflationary quintessence
• Backreaction in Growing Neutrino Quintessence
• Observational Constraints on Early Coupled Quintessence
• The cosmological Mass Varying Neutrino model in the late universe
• Halos of dark energy