Scaling Dark Energy

Abstract

We investigate the possibility of a dark energy component that is scaling with epochs. A phenomenological model is introduced whose energy density depends on the redshift in such a way that a smooth transition among the three dominant phases of the universe evolution (radiation era, matter domination, asymptotic de Sitter state) is achieved. We use the WMAP cosmic microwave background data and the luminosity distances of Type Ia Supernovae to test whether this data can provide a signal for scaling.

5 pages 4 figures

References in corpus (8)

• Type Ia Supernova Discoveries at z>1 From the Hubble Space Telescope: Evidence for Past Deceleration and Constraints on Dark Energy Evolution
• Cosmology and the Fate of Dilatation Symmetry
• The case for dynamical dark energy revisited
• Accelerated Cosmological Models in First-Order Non-Linear Gravity
• Unified dark energy models : a phenomenological approach
• Exponential Potentials for Tracker Fields
• Perturbations in cosmologies with a scalar field and a perfect fluid
• Are Domain Walls ruled out ?

Cited by in corpus (10)

• Reconciling dark energy models with f(R) theories
• Observational constraints on dark energy with generalized equations of state
• Two Loop Scalar Self-Mass during Inflation
• Dark energy exponential potential models as curvature quintessence
• Beyond the perfect fluid hypothesis for dark energy equation of state
• Cosmology with moving dark energy and the CMB quadrupole
• Moving dark energy and the CMB dipole
• A fluid os strings as a viable candidate to the dark side of the universe
• Inflessence: a phenomenological model for inflationary quintessence
• Large-scale cosmic flows and moving dark energy