Statefinder analysis of the superfluid Chaplygin gas model

Abstract

The statefinder indices are employed to test the superfluid Chaplygin gas (SCG) model describing the dark sector of the universe. The model involves Bose-Einstein condensate (BEC) as dark energy (DE) and an excited state above it as dark matter (DM). The condensate is assumed to have a negative pressure and is embodied as an exotic fluid with the Chaplygin equation of state. Excitations forms the normal component of superfluid. The statefinder diagrams show the discrimination between the SCG scenario and other models with the Chaplygin gas and indicates a pronounced effect of the DM equation of state and an indirect interaction between their two components on statefinder trajectories and a current statefinder location.

18 pages, 6 figures

References in corpus (17)

• Dynamics of dark energy
• Cosmology and the Fate of Dilatation Symmetry
• Dark Energy and the Accelerating Universe
• Observational Constraints on the Nature of the Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
• Observational constraints on $f(T)$ theory
• Inflation, dark matter and dark energy in the string landscape
• A k-essence Model Of Inflation, Dark Matter and Dark Energy
• Statefinder diagnostic and stability of modified gravity consistent with holographic and new agegraphic dark energy
• When did cosmic acceleration start? How fast was the transition?
• Generalizing a Unified Model of Dark Matter, Dark Energy, and Inflation with Non Canonical Kinetic Term
• Statefinder diagnostic for the modified polytropic Cardassian universe
• Attractors, Statefinders and Observational Measurement for Chameleonic Brans--Dicke Cosmology
• Cosmic Behavior, Statefinder Diagnostic and $w-w^{\prime }$ Analysis for Interacting NADE model in Non-flat Universe
• Unification of inflation, dark energy, and dark matter within the Salam-Sezgin cosmological model
• Constraining Dark Energy and Cosmological Transition Redshift with Type Ia Supernovae
• Relativistic Kinetics of Phonon Gas in Superfluids
• Statefinder parameters for quantum effective Yang-Mills condensate dark energy model

Cited by in corpus (3)

• Scalar-field theory of dark matter
• First cosmological constraints on the Superfluid Chaplygin gas model
• Large-scale structure in superfluid Chaplygin gas cosmology