Constraining Thawing Quintessence

Abstract

We look at observational constraints on the thawing class of scalar field models proposed to explain the late time acceleration of the universe. Using the recently introduced `Statefinder Hierarchy', we compare these thawing class of models with other widely studied dark energy (and modified gravity) models to check the underlying parameter degeneracies. We put constraints on the deviations of these thawing models from the canonical ΛCDM model using a large class of observational data, e.g, the Supernova Type Ia data, the BAO data, the CMB data and data from the measurements of the Hubble parameter using red-envelope galaxies. We also forecast constraints using a simulated dataset for the future JDEM SNe survey. Our study shows that, although with current data it is difficult to distinguish different thawing models from ΛCDM, a future JDEM like mission would be able tell apart thawing models from ΛCDM for currently acceptable values of Ω_{m0}

8 pages, Latex style, 11 eps figures, revised with included remark about future extension. Appeared in MNRAS

References in corpus (14)

• Dynamics of dark energy
• Models of f(R) Cosmic Acceleration that Evade Solar-System Tests
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• Disappearing cosmological constant in f(R) gravity
• Measuring the Baryon Acoustic Oscillation scale using the SDSS and 2dFGRS
• Conditions for the cosmological viability of f(R) dark energy models
• Can dark energy evolve to the Phantom?
• Galileon Cosmology
• Nonparametric Dark Energy Reconstruction from Supernova Data
• Thawing quintessence with a nearly flat potential
• The Statefinder hierarchy: An extended null diagnostic for concordance cosmology
• Phantom Dark Energy Models with a Nearly Flat Potential
• Observational constraints on thawing quintessence models
• The transient and the late time attractor tachyon dark energy: Can we distinguish it from quintessence ?

Cited by in corpus (15)

• Quintessence: A Review
• The landscape, the swampland and the era of precision cosmology
• Observational Constraints on Quintessence: Thawing, Tracker, and Scaling models
• Metastable Dark Energy with Radioactive-like Decay
• Low redshift observational constraints on tachyon models of dark energy
• Galaxy cluster number count data constraints on cosmological parameters
• Thawing models in the presence of a generalized Chaplygin gas
• Unifying Inflation with early and late Dark Energy in Multi-Fields: Spontaneously broken scale invariant TMT
• Thawing quintessence from the inflationary epoch to today
• Cosmology With Axionic-quintessence Coupled with Dark Matter
• Dynamical System of Scalar Field from 2-Dimension to 3-D and its Cosmological Implication
• Bound Dark Energy: towards understanding the nature of the Dark Energy
• Constraining Thawing Dark Energy using Galaxy Cluster Number Counts
• Probing Quintessence using BAO imprint on the cross-correlation of weak lensing and post-reionization HI 21 cm signal
• The string theory swampland in the Euclid, SKA and Vera Rubin observatory era