Variation of fundamental parameters and dark energy. A principal component approach
Cosmology and Nongalactic Astrophysics
2015-05-30 v2
Abstract
We discuss methods based on Principal Component Analysis to constrain the dark energy equation of state using a combination of Type Ia supernovae at low redshift and spectroscopic measurements of varying fundamental couplings at higher redshifts. We discuss the performance of this method when future better-quality datasets are available, focusing on two forthcoming ESO spectrographs - ESPRESSO for the VLT and CODEX for the E-ELT - which include these measurements as a key part of their science cases. These can realize the prospect of a detailed characterization of dark energy properties almost all the way up to redshift 4.
Keywords
Cite
@article{arxiv.1109.6793,
title = {Variation of fundamental parameters and dark energy. A principal component approach},
author = {L. Amendola and A. C. O. Leite and C. J. A. P. Martins and N. J. Nunes and P. O. J. Pedrosa and A. Seganti},
journal= {arXiv preprint arXiv:1109.6793},
year = {2015}
}
Comments
10 pages, 10 figures, version to match publication in PRD