A Simple Model for Quintessential Inflation

Abstract

We describe a simple toy model for quintessential inflation where a complex scalar field described by a lagrangian with a Peccei-Quinn U(1) symmetry spontaneously broken at a high energy scale and explicitly broken by instanton effects at a much lower energy can account for both the early inflationary phase and the recent accelerated expansion of the Universe. The real part of the complex field plays the role of the inflaton whereas the imaginary part, the "axion", is the quintessence field.

11 pages, no figures. New references and comments added. Version published in JCAP

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• Completing Natural Inflation
• A Low CMB Quadrupole from Dark Energy Isocurvature Perturbations
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Cited by in corpus (40)

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• Variable gravity: A suitable framework for quintessential inflation
• First-order formalism and dark energy
• Quintessential inflation with canonical and noncanonical scalar fields and Planck 2015 results
• Unification of inflation and dark energy {\it à la} quintessential inflation
• Constraints on backreaction in dust universes
• A class of quintessential inflation models with parameter space consistent with BICEP2
• Non-minimal gravitational reheating during kination
• Chaplygin inspired Inflation
• A review of Quintessential Inflation
• Dark energy: investigation and modeling
• Palatini $R^2$ Quintessential Inflation
• Unified early and late Universe cosmology through dissipative effects in steep quintessential inflation potential models
• Relic gravitational waves from Quintessential Inflation
• Baryogenesis in the paradigm of quintessential inflation
• A brief note on how to unify dark matter, dark energy, and inflation
• Cosmic microwave background and large-scale structure constraints on a simple quintessential inflation model
• What is needed of a scalar field if it is to unify inflation and late time acceleration ?
• Exact cosmological solutions of models with an interacting dark sector
• Unification of cosmological scalar fields
• Unified Model for Inflation and Dark Energy with Planck-Scale Pseudo-Goldstone Bosons
• Cosmological Imprints of SUSY Breaking in Models of Sgoldstinoless Non-Oscillatory Inflation
• A Quintessentially Geometric Model
• Testing $\alpha$-attractor quintessential inflation against CMB and low-redshift data
• Emergence of cosmological scaling behavior in asymptotic regime
• Dark energy in hybrid inflation
• Dark Energy, Dark Matter and Gravity
• Connecting Primordial Gravitational Waves and Dark Energy
• Constraining the quintessential $\alpha$-attractor inflation through dynamical horizon exit method
• Radiative Inflation and Dark Energy RIDEs Again after BICEP2
• Cosmological Unification, Dark Energy and the Origin of Neutrino Mass
• Radiative Inflation and Dark Energy
• Witten-O'Raifeartaigh potential revisited in the context of Warm Inflation
• Reheating constraints and the $H_0$ tension in Quintessential Inflation
• Unified Model for Inflation and Dark Matter
• Unified Model for Inflation and the Dark Side of the Universe