Saving CNB assisted EDE model at the expense of quantum corrections?

Abstract

As it is suggested in \cite{Sakstein:2019fmf, CarrilloGonzalez:2020oac}, one can dynamically introduce the coincidence time-scale for EDE in the framework of a particular mass-varying-neutrino-model as a time at which neutrinos constituting the cosmic neutrino background enter the non-relativistic regime. The model does not predict, however, the right amount of EDE density because of smallness of neutrino masses. One may hope to adjust the parameters in such a way as to ensure that the two-loop contributions are kept small while at the same time the effective mass for scalar field that enters the expression of zero-point-energy (for the field trapped in the minimum of effective potential) is sufficient for explaining the needed amount of EDE. Unfortunately, the answer is not in the affirmative.

12 pages, 1 figure; new section added, matches the published version

References in corpus (7)

• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• Growing Matter
• Growing neutrinos and cosmological selection
• Neutrino-Assisted Early Dark Energy: Theory and Cosmology
• Inflaton-driven early dark energy
• A new take on the inflationary quintessence
• Can neutrino-assisted early dark energy models ameliorate the $H_0$ tension in a natural way?