Variation of fundamental parameters and dark energy

• Verfasst von: Amendola, Luca [VerfasserIn]
• Titel: Variation of fundamental parameters and dark energy
• Titelzusatz: a principal component approach
• Verf.angabe: L. Amendola, A.C.O. Leite, C.J.A.P. Martins, N.J. Nunes, P.O.J. Pedrosa, and A. Seganti
• Fussnoten: Gesehen am 13.11.2017
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2012
• Band/Heft Quelle: (2012) Artikel-Nummer 1109.6793, 10 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565258479

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.