High-resolution temporal constraints on the dynamics of dark energy

Gong-Bo Zhao; Dragan Huterer; Xinmin Zhang

doi:10.1103/PhysRevD.77.121302

High-resolution temporal constraints on the dynamics of dark energy

Gong-Bo Zhao, Dragan Huterer, Xinmin Zhang

Institute of Cosmology & Gravitation

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Abstract

We use the recent type Ia supernova, cosmic microwave background and large-scale structure data to shed light on the temporal evolution of the dark energy equation of state w(z) out to redshift one. We constrain the most flexible parametrization of dark energy to date, and include the dark energy perturbations consistently throughout. Interpreting our results via the principal component analysis, we find no significant evidence for dynamical dark energy: the cosmological constant model is consistent with data everywhere between redshift zero and one at 95% C.L.

Original language	English
Article number	121302(R)
Journal	Physical Review D
Volume	77
DOIs	https://doi.org/10.1103/PhysRevD.77.121302
Publication status	Published - 20 Jun 2008

Keywords

astro-ph

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10.1103/PhysRevD.77.121302

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The final published version of this article by Gong-Bo Zhao et al, 'High-resolution temporal constraints on the dynamics of dark energy,' Phys. Rev. Lett. 115, 243605, can be located online at https://doi.org/10.1103/PhysRevD.77.121302. © 2008 American Physical Society
Accepted author manuscript (Post-print), 192 KB

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abstract = "We use the recent type Ia supernova, cosmic microwave background and large-scale structure data to shed light on the temporal evolution of the dark energy equation of state w(z) out to redshift one. We constrain the most flexible parametrization of dark energy to date, and include the dark energy perturbations consistently throughout. Interpreting our results via the principal component analysis, we find no significant evidence for dynamical dark energy: the cosmological constant model is consistent with data everywhere between redshift zero and one at 95% C.L.",

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High-resolution temporal constraints on the dynamics of dark energy

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Keywords

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