Quintessential Inflation with $\alpha$-attractors

Abstract

A novel approach to quintessential inflation model building is studied, within the framework of $\alpha$-attractors, motivated by supergravity theories. Inflationary observables are in excellent agreement with the latest CMB observations, while quintessence explains the dark energy observations without any fine-tuning. The model is kept intentionally minimal, avoiding the introduction of many degrees of freedom, couplings and mass scales. In stark contrast to $\Lambda$CDM, for natural values of the parameters, the model attains transient accelerated expansion, which avoids the future horizon problem, while it maintains the field displacement mildly sub-Planckian such that the flatness of the quintessential tail is not lifted by radiative corrections and violations of the equivalence principle (fifth force) are under control. In particular, the required value of the cosmological constant is near the eletroweak scale. Attention is paid to the reheating of the Universe, which avoids gravitino overproduction and respects nucleosynthesis constraints. Kination is treated in a model independent way. A spike in gravitational waves, due to kination, is found not to disturb nucleosynthesis as well.

21 pages, 4 figures, published version

References in corpus (31)

• Dynamics of dark energy
• The Standard Model Higgs boson as the inflaton
• The Unity of Cosmological Attractors
• Gaugino Condensates and D-terms from D7-branes
• Large Field Inflation and Double $\alpha$-Attractors
• Planck, LHC, and $\alpha$-attractors
• The Gravitino-Overproduction Problem in Inflationary Universe
• Single-field $\alpha$-attractors
• Quintessential inflation with canonical and noncanonical scalar fields and Planck 2015 results
• A class of quintessential inflation models with parameter space consistent with BICEP2
• Inflationary $\alpha$-attractors from $F(R)$ Gravity
• Seven-Disk Manifold, alpha-attractors and B-modes
• Tachyonic Quintessential Inflation
• Gravitational reheating in quintessential inflation
• Curvaton reheating allows TeV Hubble scale in NO inflation
• Dark Energy from $\alpha$-Attractors
• Brane assisted quintessential inflation with transient acceleration
• Evading Lyth bound in models of quintessential inflation
• Trapped Quintessential Inflation
• Random Potentials and Cosmological Attractors
• Sneutrino Inflation with $\alpha$-attractors
• Quintessential Kination and Thermal Production of Gravitinos and Axinos
• Hybrid Quintessential Inflation
• Inflationary $\alpha$-attractor cosmology: A global dynamical systems perspective
• Trapped Quintessential Inflation in the context of Flux Compactifications
• Reconstructing a model of quintessential inflation
• Cosmic microwave background and large-scale structure constraints on a simple quintessential inflation model
• Modelling Inflation with a Power-law Approach to the Inflationary Plateau
• Endlessly flat scalar potentials and $\alpha$-attractors
• On the possibility of braneworld quintessential inflation
• Reconstruction of $\alpha$-attractor supergravity models of inflation

Cited by in corpus (97)

• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Induced gravitational waves in a general cosmological background
• Dark energy, $\alpha$-attractors, and large-scale structure surveys
• Unified framework for Early Dark Energy from $\alpha$-attractors
• Emergent scale symmetry: Connecting inflation and dark energy
• Frame-dependence of higher-order inflationary observables in scalar-tensor theories
• Instant Preheating in Quintessential Inflation with $\alpha$-Attractors
• Dark Matter Freeze-in Production in Fast-Expanding Universes
• Non-minimal gravitational reheating during kination
• Hybrid cosmological attractors
• PBH remnants as dark matter produced in thermal, matter and runaway-quintessence post-inflationary scenarios
• Gravitational waves from global cosmic strings in quintessential inflation
• Reheating in quintessential inflation via gravitational production of heavy massive particles: A detailed analysis
• Hubble-induced phase transitions on the lattice with applications to Ricci reheating
• Primordial black holes and gravitational waves from non-canonical inflation
• A review of Quintessential Inflation
• Quintessential inflation in Palatini $f(R)$ gravity
• Exploring the Spectral Shape of Gravitational Waves Induced by Primordial Scalar Perturbations and Connection with the Primordial Black Hole Scenarios
• Palatini $R^2$ Quintessential Inflation
• Quintessential inflation: A tale of emergent and broken symmetries
• Dark energy from $\alpha$-attractors: phenomenology and observational constraints
• Relic gravitational waves from Quintessential Inflation
• Boosting Ultraviolet Freeze-in in NO Models
• Inflationary Potential as seen from Different Angles: Model Compatibility from Multiple CMB Missions
• Quintessential $\alpha$-attractor inflation: forecasts for Stage IV galaxy surveys
• A paradigm of warm quintessential inflation and production of relic gravity waves
• Hubble-induced phase transitions: Walls are not forever
• Signatures of Non-thermal Dark Matter with Kination and Early Matter Domination: Gravitational Waves versus Laboratory Searches
• Bayesian evidence for $\alpha$-attractor dark energy models
• Scale-invariant alternatives to general relativity. III. The inflation--dark-energy connection
• The reconstruction of tachyon inflationary potentials
• $\alpha$ attractors in Quintessential Inflation motivated by Supergravity
• Observational Constraints on Dynamical Dark Energy Models
• Quintessential inflation and cosmological seesaw Mechanism: reheating and observational constraints
• Beyond the Poles in Attractor Models of Inflation
• Baryogenesis in the paradigm of quintessential inflation
• Perturbations in a scalar field model with virtues of $\Lambda$CDM
• Understanding gravitational particle production in quintessential inflation
• Quintessential Inflation from Lorentzian Slow Roll
• Slow-Roll Inflation with Exponential Potential in Scalar-Tensor Models
• Crossing the phantom divide line as an effect of quantum transitions
• Different reheating mechanisms in quintessence inflation
• Unifying Inflation with early and late Dark Energy in Multi-Fields: Spontaneously broken scale invariant TMT
• Unifying dark matter, dark energy and inflation with a fuzzy dark fluid
• Slow-Roll Inflation in Scalar-Tensor Models
• Higgs inflation with non-minimal derivative coupling to gravity
• Quintessential inflation with a trap and axionic dark matter
• What is needed of a scalar field if it is to unify inflation and late time acceleration ?
• Inflation with non-canonical scalar fields revisited
• New parameterization for unified dark matter and dark energy
• Observable Gravitational Waves from Hyperkination in Palatini Gravity and Beyond
• T-Model Inflation and Bouncing Cosmology
• DESI constraints on $\alpha$-attractor inflationary models
• Braneworld inflation with effective α-attractor potential
• U(1) symmetric $\alpha$-attractors
• Quintessential Inflation with Dynamical Higgs Generation as an Affine Gravity
• Non-oscillating Early Dark Energy and Quintessence from Alpha-Attractors
• Post-inflationary Scalar Tensor Cosmology and Inflationary Parameters
• The Reconstruction of Non-Minimal Derivative Coupling Inflationary Potentials
• On the $\alpha$-attractor T-models
• Attractor Cosmology from non-minimally Coupled Gravity
• $\alpha$-attractor dark energy in view of next-generation cosmological surveys
• Non-Oscillatory No-Scale Inflation
• Cosmological Imprints of SUSY Breaking in Models of Sgoldstinoless Non-Oscillatory Inflation
• Dark energy as a remnant of inflation and electroweak symmetry breaking
• Testing $\alpha$-attractor quintessential inflation against CMB and low-redshift data
• Bifurcations in Ratra-Peebles quintessence models and their extensions
• Quantum-Corrected ${\varphi }^4$ Inflation in Light of ACT Observations
• New generalization of the simplest $\alpha$-attractor $T$ model
• Emergence of cosmological scaling behavior in asymptotic regime
• Dynamical systems in perturbative scalar field cosmology
• Pole inflation from non-minimal coupling to gravity
• Viable Inflationary Evolution from Loop Quantum Cosmology Scalar-Tensor Theory
• Modified hybrid inflation, reheating and stabilization of the electroweak vacuum
• Quintessential inflation and nonlinear effects of the tachyonic trap mechanism
• Connecting Primordial Gravitational Waves and Dark Energy
• Radiative-Corrected Higgs Inflation in Light of the Latest ACT Observations
• Warm inflation in general scalar-tensor theory of gravity
• New simple and accurate quintessence approximations
• Gravitational production of dark matter in the Peebles-Vilenkin model
• Constraining the quintessential $\alpha$-attractor inflation through dynamical horizon exit method
• The spectrum of Gravitational Waves, their overproduction in quintessential inflation and its influence in the reheating temperature
• Constraining non-minimally coupled squared-Quartic Hilltop Inflation in light of ACT observations
• $\alpha$-attractor potentials in loop quantum cosmology
• Scaling solutions for asymptotically free quantum gravity
• Constraining $\beta$-Exponential Inflation with the latest ACT observations
• Gravitational waves from a curvature-induced phase transition of a Higgs-portal dark matter sector
• Two-Field Quintessential Higgs model and the Swampland
• Reheating constraints and the $H_0$ tension in Quintessential Inflation
• Witten-O'Raifeartaigh potential revisited in the context of Warm Inflation
• Gravitational particle production of superheavy massive particles in Quintessential Inflation: A numerical analysis
• Inflationary $\alpha$-Attractor From Type IIB/F Theory
• Quintessential Inflation in Palatini $F(R,X)$ gravity
• A cross-epoch endpoint-consistency test of a single effective scaling from dark energy to inflation
• Non-minimally coupled quintessential inflation
• Inflation from a generalized exponential plateau: towards extra suppressed tensor-to-scalar ratios
• Complex Inflaton Potentials with Nonminimal Coupling: Robust Inflation and Geometric Reheating