Reconstructing thawing quintessence with multiple datasets

Abstract

In this work we model the quintessence potential in a Taylor series expansion, up to second order, around the present-day value of the scalar field. The field is evolved in a thawing regime assuming zero initial velocity. We use the latest data from the Planck satellite, baryonic acoustic oscillations observations from the Sloan Digital Sky Survey, and Supernovae luminosity distance information from Union2.1 to constrain our models parameters, and also include perturbation growth data from the WiggleZ, BOSS and the 6dF surveys. The supernova data provide the strongest individual constraint on the potential parameters. We show that the growth data performance is competitive with the other datasets in constraining the dark energy parameters we introduce. We also conclude that the combined constraints we obtain for our model parameters, when compared to previous works of nearly a decade ago, have shown only modest improvement, even with new growth of structure data added to previously-existent types of data.

9 pages, 4 figures and 1 table. Version 2 with minor changes to match Physical Review D accepted version

References in corpus (10)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report
• Dynamical behavior of generic quintessence potentials: constraints on key dark energy observables
• Calibrating Dark Energy
• Quintessence reconstructed: new constraints and tracker viability
• Measuring deviations from a cosmological constant: a field-space parameterization
• Quintessence's Last Stand?
• Growth Rate in the Dynamical Dark Energy Models
• Cosmological constraints from large-scale structure growth rate measurements
• Probing Quintessence Potential with Future Cosmological Surveys

Cited by in corpus (5)

• Hubble parameter measurement constraints on the redshift of the deceleration-acceleration transition, dynamical dark energy, and space curvature
• Constraints on non-flat cosmologies with massive neutrinos after Planck 2015
• Observational Constraints on Dynamical Dark Energy Models
• Bound Dark Energy: towards understanding the nature of the Dark Energy
• Constraints for the thawing and freezing potentials