H(z) DIAGNOSTICS ON THE NATURE OF DARK ENERGY

2011/03/28 by Sergio del Campo, SERGIO DEL CAMPO, Ramon Herrera +3
Physics and Astronomy · #Astronomy and Astrophysical Research #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph.CO #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1142/s0218271811018871

published as Int.J.Mod.Phys.D20:561-579,2011 · 22 pages, 7 figures. Accepted for publication in IJMPD

arxiv created 2011/03/28 · openalex publication_date 2011/04/01 · arxiv updated 2011/05/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

The two dominant components of the cosmic budget today, pressureles matter and dark energy, may or may not be interacting with each other. Currently, both possibilities appear compatible with observational data. We propose several criteria based on the history of the Hubble factor that can help discern whether they are interacting and whether dark energy is phantom or quintessence in nature.

Citations

• Statefinder -- a new geometrical diagnostic of dark energy
• Evolution of the scale factor with a variable cosmological term
• Accelerating Universes with Scaling Dark Matter
• Le Châtelier–Braun principle in cosmological physics