Sudden Future Singularity models as an alternative to Dark Energy?

Abstract

Current observational evidence does not yet exclude the possibility that dark energy could be in the form of phantom energy. A universe consisting of a phantom constituent will be driven toward a drastic end known as the `Big Rip' singularity where all the matter in the universe will be destroyed. Motivated by this possibility, other evolutionary scenarios have been explored by Barrow, including the phenomena which he called Sudden Future Singularities (SFS). In such a model it is possible to have a blow up of the pressure occurring at sometime in the future evolution of the universe while the energy density would remain unaffected. The particular evolution of the scale factor of the universe in this model that results in a singular behaviour of the pressure also admits acceleration in the current era. In this paper we will present the results of our confrontation of one example class of SFS models with the available cosmological data from high redshift supernovae, baryon acoustic oscillations (BAO) and the cosmic microwave background (CMB). We then discuss the viability of the model in question as an alternative to dark energy.

9 pages, 7 figures. Accepted for publication in MNRAS

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Cited by in corpus (13)

• Cosmological bouncing solutions in f(T,B) gravity
• Cosmological perturbations in mimetic matter model
• Regularizing cosmological singularities by varying physical constants
• Cosmological tests of sudden future singularities
• Density preturbations in a finite scale factor singularity universe
• The fate of bound systems through Sudden Future Singularities
• Observational constraints on finite scale factor singularities
• Variations of the fine-structure constant $\alpha$ in exotic singularity models
• Redshift drift test of exotic singularity universes
• Dark energy and dark matter perturbations in singular universes
• Spacetime averaging of exotic singularity universes
• Non-exotic conformal structure of weak exotic singularities
• Sudden cosmological singularities in Aether scalar-tensor theories