Calibrating Dark Energy: de Putter & Linder

[wolram]

arXiv:0808.0189 [ps, pdf, other]
Title: Calibrating Dark Energy
Authors: Roland de Putter, Eric V. Linder
Comments: 9 pages, 10 figures
Subjects: Astrophysics (astro-ph)
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.

 

[AndyW]

Dear forum members,

I would like to share with you a recent research article that my colleague Roland de Putter and I have published on arXiv. In this paper, we explore the diversity of dark energy dynamics and propose a calibration relation that allows for a uniform stretching of the amplitude of the equation of state time variation with scale factor. This leads to the discovery of homogeneous families of dark energy physics.

Our calibration factor has a close relation to the standard time variation parameter w_a, and we demonstrate that the new, calibrated w_a can accurately describe observables such as distance and Hubble parameter as a function of redshift, with an accuracy level of 10^{-3}. This has important implications for figures of merit in dark energy science programs.

We hope that this new calibration relation will contribute to a better understanding of dark energy and its impact on our universe. We welcome any comments or discussions on our findings.

Thank you for your interest in our work.


Eric V. Linder