A new take on the inflationary quintessence

Abstract

The quintessence field coupled to the cosmic neutrino background (CNB) has been widely discussed as an alternative mechanism to address the coincidence problem. As it is well known, it is possible to extend such models to obtain quintessential inflation, that is, to incorporate inflationary stage as well. Taking an alternative route, one can start from the well established inflationary models and obtain successful quintessence models at the expense of coupling with the CNB. To Follow this route, we use a slightly reformulated model addressed in PRD95, 123521 (2017). This particular model assumes ${\mathcal{Z}}_2$ symmetry for both scalar field potential and coupling term, which then breaks down in course of the cosmological evolution. For our discussion, however, the ${\mathcal{Z}}_2$ symmetry of the potential is not mandatory the model to work. The conventional mechanism of particle production by the oscillating inflaton field (and their subsequent thermalization) remains operative. It is plain to see that the proposed construction can be easily applied for many successful models of inflation to incorporate dark energy at the expense of coupling with the CNB. We address the issue of neutrino nuggets from the quantum field theory point of view. Namely, these nuggets are considered as bound states caused basically by the Yukawa force, which arises in the framework of linear perturbation theory due to exchange of virtual quanta of quintessence field between the neutrinos.

11 pages, 3 figures

References in corpus (14)

• Cosmology and the Fate of Dilatation Symmetry
• Growing Matter
• Growing neutrinos and cosmological selection
• Adiabatic instability in coupled dark energy-dark matter models
• Quintessential inflation with canonical and noncanonical scalar fields and Planck 2015 results
• Neutrino Dark Energy -- Revisiting the Stability Issue
• Nuclear Structure of Bound States of Asymmetric Dark Matter
• Observational constraints on successful model of quintessential Inflation
• Clarifying spherical collapse in coupled dark energy cosmologies
• The Adiabatic Instability on Cosmology's Dark Side
• PICO: Probe of Inflation and Cosmic Origins
• Dynamics of neutrino lumps in growing neutrino quintessence
• Neutrino Lumps in Quintessence Cosmology
• Neutrino Lump Fluid in Growing Neutrino Quintessence

Cited by in corpus (5)

• A review of Quintessential Inflation
• Electromagnetic Asymmetry, Relegation of Curvature Singularities of Charged Black Holes, and Cosmological Equations of State in View of the Born--Infeld Theory
• Inflaton-driven early dark energy
• Constraining the quintessential $\alpha$-attractor inflation through dynamical horizon exit method
• Saving CNB assisted EDE model at the expense of quantum corrections?