Transient Accelerated Expansion and Double Quintessence

Abstract

We consider Double Quintessence models for which the Dark Energy sector consists of two coupled scalar fields. We study in particular the possibility to have a transient acceleration in these models. In both Double Quintessence models studied here, it is shown that if acceleration occurs, it is necessarily transient. We consider also the possibility to have transient acceleration in two one-field models, the Albrecht-Skordis model and the pure exponential. Using separate conservative constraints (marginalizing over the other parameters) on the effective equation of state $w_{eff}$, the relative density of the Dark Energy ${\Omega }_{Q,0}$ and the present age of the universe, we construct scenarios with a transient acceleration that has already ended at the present time, and even with no acceleration at all, but a less conservative analysis using the CMB data rules out the last possibility. The scenario with a transient acceleration ended by today, can be implemented for the range of cosmological parameters ${\Omega }_{m,0}\gtrsim 0.35$ and $h\lesssim 0.68$.

Version accepted in Phys. Rev. D, 22 pages, 10 figures, 4 tables

References in corpus (64)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• The Cosmological Constant and Dark Energy
• Cosmological Imprint of an Energy Component with General Equation of State
• Cosmology and the Fate of Dilatation Symmetry
• Quintessence, Cosmic Coincidence, and the Cosmological Constant
• An alternative to quintessence
• Discovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications
• Accelerating Universes with Scaling Dark Matter
• Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification
• Cosmological Results from High-z Supernovae
• Measurements of the Cosmological Parameters Omega and Lambda from the First 7 Supernovae at z >= 0.35
• Cosmological Tracking Solutions
• Exponential potentials and cosmological scaling solutions
• Unification of Dark Matter and Dark Energy: the Inhomogeneous Chaplygin Gas
• Cosmology with a Primordial Scaling Field
• Reconstruction of a scalar-tensor theory of gravity in an accelerating universe
• 1/R gravity and Scalar-Tensor Gravity
• Structure formation with a self-tuning scalar field
• Assisted inflation
• The State of the Dark Energy Equation of State
• Quintessence as a run-away dilaton
• Scalar-tensor gravity in an accelerating universe
• Phenomenology of a realistic accelerating universe using only Planck-scale physics
• String Theory and Quintessence
• Effective equation of state and energy conditions in phantom/tachyon inflationary cosmology perturbed by quantum effects
• Cosmological observations in scalar-tensor quintessence
• Limitations in using luminosity distance to determine the equation of state of the universe
• Quintessence, super-quintessence and observable quantities in Brans-Dicke and non-minimally coupled theories
• Probing the dark side: Constraints on the dark energy equation of state from CMB, large scale structure and Type Ia supernovae
• Measuring the Equation-of-state of the Universe: Pitfalls and Prospects
• Early-universe constraints on a Primordial Scaling Field
• Generalized Assisted Inflation
• The Acceleration of the Universe, a Challenge for String Theory
• Resolving the Cosmological Missing Energy Problem
• Bounds on the possible evolution of the Gravitational Constant from Cosmological Type-Ia Supernovae
• Dynamics of Assisted Inflation
• Current constraints on the dark energy equation of state
• Cosmological acceleration, varying couplings, and Lorentz breaking
• SUSY QCD and Quintessence
• Constraining the quintessence equation of state with SnIa data and CMB peaks
• A late-time transition in the cosmic dark energy?
• Observational Bounds on Cosmic Doomsday
• Can dark energy be decaying?
• A Two-Field Quintessence Model
• Structure of Primordial Gravitational Waves Spectrum in a Double Inflationary Model
• Can the Universe escape eternal acceleration?
• Phase Space Analysis of Quintessence Cosmologies with a Double Exponential Potential
• Is the present expansion of the universe really accelerating?
• Cosmological Scaling Solutions and Cross-coupling Exponential Potential
• Quintessence, Cosmological Horizons, and Self-Tuning
• Are Domain Walls ruled out ?
• Fine Tuning in Quintessence Models with Exponential Potentials
• How old is the Universe ? Setting new constraints on the age of the Universe
• A two-scalar model for a small but nonzero cosmological constant
• Non-linear perturbations in scalar-tensor cosmologies
• Initial conditions for quintessence after inflation
• Hybrid Quintessence with an End or Quintessence from Branes and Large Dimensions
• Oscillating dark energy: a possible solution to the problem of eternal acceleration
• Open static Chaplygin universe
• Late-time Cosmic Dynamics from M-theory
• Cosmic Acceleration and M Theory Cosmology
• Required Conditions for Late Time Acceleration and Early Time Deceleration in Generalized Scalar-Tensor Theories
• On the problem of equation of state for the $\Lambda$ - field

Cited by in corpus (41)

• Dynamics of dark energy
• Quintessence: A Review
• Scalar-Tensor Models of Normal and Phantom Dark Energy
• Quintom cosmologies admitting either tracking or phantom attractors
• Quintom cosmologies with arbitrary potentials
• Generalizing the generalized Chaplygin gas
• Supernovae constraints on models of dark energy revisited
• 5-dimensional Brans-Dicke Theory and Cosmic Acceleration
• Could the cosmic acceleration be transient? A cosmographic evaluation
• A Quintom scenario with mixed kinetic terms
• Metastable Dark Energy with Radioactive-like Decay
• Dynamics of assisted quintessence
• Dark energy: investigation and modeling
• The transient acceleration from time-dependent interacting dark energy models
• Brane assisted quintessential inflation with transient acceleration
• Transient Observers and Variable Constants, or Repelling the Invasion of the Boltzmann's Brains
• Quintessential Kination and Thermal Production of Gravitinos and Axinos
• Cosmological Evolution of Dirac-Born-Infeld Field
• Quintessence dynamics with two scalar fields and mixed kinetic terms
• Assisted dark energy
• Trapped Quintessential Inflation in the context of Flux Compactifications
• Reconstructing the History of Energy Condition Violation from Observational Data
• Cosmological Scaling Solutions for Multiple Scalar Fields
• Transient acceleration from a hybrid Chaplygin gas
• The complementarity of the redshift drift
• Dark Energy From Fifth Dimensional Brans-Dicke Theory
• Expanding Universe: slowdown or speedup?
• Inflection Point Quintessence
• The dynamics of coset dimensional reduction
• Dark energy with the help of interacting dark sectors
• Homogeneous cosmologies and the Maupertuis-Jacobi principle
• Graceful exit from inflation for minimally coupled Bianchi A scalar field models
• Interacting Induced Dark Energy Model
• Observational constraints on inflection point quintessence with a cubic potential
• FLRW Cosmology of Induced Dark Energy Model and Open Universe
• Stability of multi-field cosmological solutions in the presence of a fluid
• Observational effects of the early episodically dominating dark energy
• A class of transient acceleration models consistent with Big Bang Cosmology
• Dark energy without fine tuning
• DESI constraints on two-field quintessence with exponential potentials
• Quantum Quintom Cosmology