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arxiv: 0808.0189 · v1 · submitted 2008-08-01 · 🌌 astro-ph

Calibrating Dark Energy

classification 🌌 astro-ph
keywords darkenergycalibrationfactorparameterrelationtimevariation
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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 w_a, and we show that the new, calibrated w_a 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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Cited by 6 Pith papers

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