Canto I of the "Inferno"

Alighieri, Dante; Barnstone, Willis

doi:10.2307/25304042

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Observing Dark Energy1

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2008

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“…If we reach the stage of probing the cosmic expansion history below the 10 −3 precision level, we should revisit the question of a further calibration parameter. Finally, this prescription is meant to help us find our way through the dark forest [25] of models of cosmic acceleration, making accurate, more or less model independent assessments. Once precision data exist, they should be analyzed for every model of interest and within every applicable fit technique, parametric and nonparametric.…”

Section: Observing Dark Energymentioning

confidence: 99%

Calibrating dark energy

Putter

Linder

2008

J. Cosmol. Astropart. Phys.

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Exploring the diversity of dark energy dynamics, we discover a calibration relation, a uniform stretching of the amplitude of the equation of state time variation with scale factor. This defines homogeneous families of dark energy physics. The calibration factor has a close relation to the standard time variation parameter wa, and we show that the new, calibrated wa describes observables, i.e. distance and Hubble parameter as a function of redshift, typically to an accuracy level of 10 −3 . We discuss implications for figures of merit for dark energy science programs.

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Section: Observing Dark Energymentioning

confidence: 99%