Constraints on the redshift dependence of the dark energy potential

By J. Simón, L. Verde, Raul Jimenez. 2004

1,037 citations recorded by the source corpus.

We develop a formalism to characterize the shape and the redshift evolution of the dark energy potential. Our formalism makes use of quantities similar to the horizon-flow parameters in inflation and is general enough that can deal with multiscalar quintessence scenarios, exotic matter components, and higher-order curvature corrections to General Relativity. We show how the shape of the dark energy potential can be recovered nonparametrically using this formalism and we present approximations analogous to the ones relevant to slow-roll inflation. Since presently available data do not allow a nonparametric and exact reconstruction of the potential, we consider a general parametric description. This reconstruction can also be used in other approaches followed in the literature (e.g., the reconstruction of the redshift evolution of the dark energy equation of state $w(z)$). Using observations of passively evolving galaxies and supernova data we derive constraints on the dark energy potential shape in the redshift range $0.1lzl1.8$. Our findings show that at the $1\ensuremath{\sigma}$ level the potential is consistent with being constant, although at the same level of confidence variations cannot be excluded with current data. We forecast constraints achievable with future data from the Atacama Cosmology Telescope.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/4154d6bfd41dbc47258b1e31a1883a0b6343f89d

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In Astronomy and Astrophysics

1. J. Dunlop
2. A. Koekemoer
3. P. V. van Dokkum
4. A. Renzini
5. C. Conroy
6. A. Cimatti
7. R. McLure
8. P. Capak

Citations in the corpus

• Setting the Stage for Cosmic Chronometers. II. Impact of Stellar Population Synthesis Models Systematics and Full Covariance Matrix (2020, methodology): “In previous works (Simon et al. 2005; Carson & Nichol 2010; Stern et al. 2010; Liu et al. 2012; Moresco et al. 2012b; Zhang et al. 2014; Moresco 2015; Moresco et al. 2016b; Ratsimbazafy et al. 2017), it was demonstrated how this method can be applied to galaxy surveys over a wide range of…”
• Cosmic chronometers: constraining the equation of state of dark energy. I: H(z) measurements (2009, neutral): “A preliminary analysis, with archival data, has already been carried out [22, 23], and the results applied to constrain dark-energy theories (e.”
• Holographic dark energy (2016, result): “further compared the observed expansion rate H(z) [428] with that predicted by these three holographic DE models.”
• HUBBLE PARAMETER MEASUREMENT CONSTRAINTS ON THE REDSHIFT OF THE DECELERATION–ACCELERATION TRANSITION, DYNAMICAL DARK ENERGY, AND SPACE CURVATURE (2016, methodology): “NEW HUBBLE PARAMETER DATA COMPILATION In Table 1 we collect 38 Hubble parameter H(z) measurements from Simon et al. (2005), Stern et al. (2010), Moresco et al. (2012), Blake et al. (2012), Zhang et al. (2012), Font-Ribera et al. (2014), Delubac et al. (2015), Moresco (2015), Moresco et al. (2016),…”
• Hubble Parameter and Baryon Acoustic Oscillation Measurement Constraints on the Hubble Constant, the Deviation from the Spatially Flat ΛCDM Model, the Deceleration–Acceleration Transition Redshift, and Spatial Curvature (2017, background): “Current H(z) data covers a large redshift range, 0.07 z 2.36 (Simon et al. 2005; Stern et al. 2010; Blake et al. 2012; Moresco et al. 2012; Font-Ribera et al. 2014; Delubac et al. 2015; Moresco 2015; Moresco et al. 2016; Alam et al. 2017), larger than that covered by the Type Ia supernovae.”