Fitting Type Ia supernovae with coupled dark energy

Abstract

We discuss the possible consistency of the recently discovered Type Ia supernovae at z>1 with models in which dark energy is strongly coupled to a significant fraction of dark matter, and in which an (asymptotic) accelerated phase exists where dark matter and dark energy scale in the same way. Such a coupling has been suggested for a possible solution of the coincidence problem, and is also motivated by string cosmology models of "late time" dilaton interactions. Our analysis shows that, for coupled dark energy models, the recent data are still consistent with acceleration starting as early as at $z=3$ (to within 90% c.l.), although at the price of a large "non-universality" of the dark energy coupling to different matter fields. Also, as opposed to uncoupled models which seem to prefer a ``phantom'' dark energy, we find that a large amount of coupled dark matter is compatible with present data only if the dark energy field has a conventional equation of state w>-1.

13 pages, 6 figures. Final version, accepted for publication in JCAP

References in corpus (27)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
• Discovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications
• A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
• A Dynamical Solution to the Problem of a Small Cosmological Constant and Late-time Cosmic Acceleration
• Coupled Quintessence
• Exponential potentials and cosmological scaling solutions
• MAXIMA-1: A Measurement of the Cosmic Microwave Background Anisotropy on angular scales of 10 arcminutes to 5 degrees
• Can the dark energy equation-of-state parameter w be less than -1?
• DASI First Results: A Measurement of the Cosmic Microwave Background Angular Power Spectrum
• Interacting Dark Matter and Dark Energy
• The State of the Dark Energy Equation of State
• Quintessence as a run-away dilaton
• Super-Acceleration from Massless, Minimally Coupled ${\varphi }^4$
• Dilatonic ghost condensate as dark energy
• Stationary dark energy: the present universe as a global attractor
• Dark Energy and Dark Matter
• Probing the dark side: Constraints on the dark energy equation of state from CMB, large scale structure and Type Ia supernovae
• Baryon bias and structure formation in an accelerating universe
• N-body simulations for coupled dark energy: halo mass function and density profiles
• Acceleration at z>1?
• Late time acceleration in Brans Dicke Cosmology
• Loop Corrections to Scalar Quintessence Potentials
• Enlarged quintessence cosmology
• Large-N bounds on, and compositeness limit of, gauge and gravitational interactions
• Early acceleration and adiabatic matter perturbations in a class of dilatonic dark-energy models

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