Nonparametric reconstruction of dynamical dark energy via observational Hubble parameter data

Abstract

We study the power of current and future observational Hubble parameter data (OHD) on non-parametric estimations of the dark energy equation of state, $w(z)$. We propose a new method by conjunction of principal component analysis (PCA) and the criterion of goodness of fit (GoF) criterion to reconstruct $w(z)$, ensuring the sensitivity and reliability of the extraction of features in the EoS. We also give an new error model to simulate future OHD data, to forecast the power of future OHD on the EoS reconstruction. The result shows that current OHD, despite in less quantity, give not only a similar power of reconstruction of dark energy compared to the result given by type Ia supernovae, but also extend the constraint on $w(z)$ up to redshift $z\simeq 2$. Additionally, a reasonable forecast of future data in more quantity and better quality greatly enhances the reconstruction of dark energy.

5 pages, 2 figures, accepted for publication in PRD, http://link.aps.org/doi/10.1103/PhysRevD.88.103528

References in corpus (9)

• Two new diagnostics of dark energy
• Baryon Acoustic Oscillations in the Ly-α forest of BOSS quasars
• Cosmic dynamics in the era of Extremely Large Telescopes
• Improved Constraints on the Acceleration History of the Universe and the Properties of the Dark Energy
• Power of Observational Hubble Parameter Data: a Figure of Merit Exploration
• Examining the evidence for dynamical dark energy
• Using H(z) data as a probe of the concordance model
• Constraints on holographic dark energy models using the differential ages of passively evolving galaxies
• Exploring the Dark Energy Redshift Desert with the Sandage-Loeb Test

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