Calibrating dark energy

被引：50

作者：

de Putter, Roland ^{[1
]}

Linder, Eric V. ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2008年 / 10期

关键词：

dark energy theory; classical tests of cosmology;

D O I：

10.1088/1475-7516/2008/10/042

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：17

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