Calibrating Dark Energy
Astrophysics
2009-11-13 v1
Abstract
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.
Cite
@article{arxiv.0808.0189,
title = {Calibrating Dark Energy},
author = {Roland de Putter and Eric V. Linder},
journal= {arXiv preprint arXiv:0808.0189},
year = {2009}
}
Comments
9 pages, 10 figures