$H(z)$ diagnostics on the nature of dark energy

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.

22 pages, 7 figures. Accepted for publication in IJMPD

References in corpus (13)

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Cited by in corpus (3)

• A new null diagnostic customized for reconstructing the properties of dark energy from BAO data
• Notes on dark energy interacting with dark matter and unparticle in loop quantum cosmology
• Instability in interacting dark sector: An appropriate Holographic Ricci dark energy model