Dynamics of neutrino lumps in growing neutrino quintessence

Abstract

We investigate the formation and dissipation of large scale neutrino structures in cosmologies where the time evolution of dynamical dark energy is stopped by a growing neutrino mass. In models where the coupling between neutrinos and dark energy grows with the value of the scalar cosmon field, the evolution of neutrino lumps depends on the neutrino mass. For small masses the lumps form and dissolve periodically, leaving only a small backreaction of the neutrino structures on the cosmic evolution. This process heats the neutrinos to temperatures much above the photon temperature such that neutrinos acquire again an almost relativistic equation of state. The present equation of state of the combined cosmon-neutrino fluid is very close to -1. In contrast, for larger neutrino masses the lumps become stable. The highly concentrated neutrino structures entail a large backreaction similar to the case of a constant neutrino-cosmon coupling. A present average neutrino mass of around 0.5 eV seems so far compatible with observation. For masses lower than this value, neutrino induced gravitational potentials remain small, making the lumps difficult to detect.

arXiv comment19 pages, 10 figures, 3 tables

References in corpus (29)

• Efficient Computation of CMB anisotropies in closed FRW models
• Cosmological Perturbation Theory in the Synchronous and Conformal Newtonian Gauges
• Cosmological Perturbation Theory in the Synchronous vs. Conformal Newtonian Gauge
• Prethermalization
• Dark Energy from Mass Varying Neutrinos
• Extended Quintessence
• Super-acceleration as Signature of Dark Sector Interaction
• Hydrodynamical N-body simulations of coupled dark energy cosmologies
• Neutrino Oscillations as a Probe of Dark Energy
• Modified Gravity-GADGET: A new code for cosmological hydrodynamical simulations of modified gravity models
• Growing Matter
• Matter power spectrum and the challenge of percent accuracy
• Growing neutrinos and cosmological selection
• Cosmology of Mass-Varying Neutrinos Driven by Quintessence: Theory and Observations
• Neutrino clustering in growing neutrino quintessence
• Clarifying spherical collapse in coupled dark energy cosmologies
• Cosmological Evolution of Interacting Dark Energy Models with Mass Varying Neutrinos
• On the dark energy clustering properties
• Very large scale structures in growing neutrino quintessence
• Speed of Sound in the Mass Varying Neutrinos Scenario
• Neutrino lumps and the Cosmic Microwave Background
• Structure Formation and Backreaction in Growing Neutrino Quintessence
• Oscillating nonlinear large scale structure in growing neutrino quintessence
• Neutrino Lump Fluid in Growing Neutrino Quintessence
• Nonlinear matter spectra in growing neutrino quintessence
• Nonlinear growing neutrino cosmology
• Mass-varying neutrino in light of cosmic microwave background and weak lensing
• Stability in MaVaN Models
• Backreaction in Growing Neutrino Quintessence

Cited by in corpus (23)

• Emergent scale symmetry: Connecting inflation and dark energy
• Primordial black holes from long-range scalar forces and scalar radiative cooling
• Early mass varying neutrino dark energy: Nugget formation and Hubble anomaly
• Primordial black holes from fifth forces
• Primordial dark matter halos from fifth forces
• Quintessential inflation: A tale of emergent and broken symmetries
• Cosmic Neutrino Background Detection in Large-Neutrino-Mass Cosmologies
• Mass varying neutrinos, symmetry breaking, and cosmic acceleration
• Halo Formation from Yukawa Forces in the Very Early Universe
• Cosmology of strongly interacting fermions in the early universe
• Strongly Coupled Dark Energy Cosmologies yielding large mass Primordial Black Holes
• A new take on the inflationary quintessence
• Gravitational waves from rapid structure formation on microscopic scales before matter-radiation equality
• Fireball baryogenesis from early structure formation due to Yukawa forces
• Mass varying neutrinos with different quintessence potentials
• Early dark energy constraints on growing neutrino quintessence cosmologies
• Observational Constraints on Early Coupled Quintessence
• Probing Long-Range Forces Between Neutrinos with Cosmic Structures
• Screening Mechanisms on White Dwarfs: Symmetron & Dilaton
• Imprints of vector field non-standard couplings on solar neutrino flux
• Structural Implications of the Chameleon Mechanism on White Dwarfs
• The cosmological Mass Varying Neutrino model in the late universe
• Halos of dark energy