Non-parametric Dark Energy Degeneracies

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dc.creatorHlozek, Renée
dc.creatorCortês, Marina
dc.creatorClarkson, Chris
dc.creatorBassett, Bruce
dc.date2008-01-24
dc.date.accessioned2026-07-07T09:54:22Z
dc.date.available2026-07-07T09:54:22Z
dc.descriptionWe study the degeneracies between dark energy dynamics, dark matter and curvature using a non-parametric and non-perturbative approach. This allows us to examine the knock-on bias induced in the reconstructed dark energy equation of state, w(z), when there is a bias in the cosmic curvature or dark matter content, without relying on any specific parameterisation of w. Even assuming perfect Hubble, distance and volume measurements, we show that for z > 1, the bias in w(z) is up to two orders of magnitude larger than the corresponding errors in Omega_k or Omega_m. This highlights the importance of obtaining unbiased estimators of all cosmic parameters in the hunt for dark energy dynamics.
dc.description10 pages, 8 figures. Invited Review for special issue of General Relativity and Gravitation issue on Dark Energy, eds. G. F.R Ellis et al
dc.identifierhttps://arxiv.org/abs/0801.3847
dc.identifierhttp://arxiv.org/abs/0801.3847
dc.identifierGeneral Relativity and Gravitation, Volume 40, Issue 2-3, pp. 285-300 (2008)
dc.identifierdoi:10.1007/s10714-007-0548-6
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/166286
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleNon-parametric Dark Energy Degeneracies
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