DBI models for the unification of dark matter and dark energy

Abstract

We propose a model based on a DBI action for the unification of dark matter and dark energy. This is supported by the results of the study of its background behavior at early and late times, and reinforced by the analysis of the evolution of perturbations. We also perform a Bayesian analysis to set observational constraints on the parameters of the model using type Ia SN, CMB shift and BAO data. Finally, to complete the study we investigate its kinematics aspects, such as the effective equation of state parameter, acceleration parameter and transition redshift. Particularizing those parameters for the best fit one appreciates that an effective phantom is preferred.

11 pages, 8 figures, revtex, new references

References in corpus (16)

• Measuring the Baryon Acoustic Oscillation scale using the SDSS and 2dFGRS
• Observational Constraints on Dark Energy and Cosmic Curvature
• A Microscopic Limit on Gravitational Waves from D-brane Inflation
• Reconstruction of the deceleration parameter and the equation of state of dark energy
• Transition Redshift: New Kinematic Constraints from Supernovae
• On Inflation in String Theory
• DBI Inflation in the Tip Region of a Warped Throat
• Bayesian analysis of Friedmannless cosmologies
• Forecasting the Bayes factor of a future observation
• Primordial Non-Gaussianity and Gravitational Waves: Observational Tests of Brane Inflation in String Theory
• Cosmological constraints combining H(z), CMB shift and SNIa observational data
• Brane inflation and reheating
• On Power Law Inflation in DBI Models
• A Consistency Relation for Power Law Inflation in DBI models
• On the Slow Roll Expansion for Brane Inflation
• Constraining Dark Energy and Cosmological Transition Redshift with Type Ia Supernovae

Cited by in corpus (13)

• Cosmology and Fundamental Physics with the Euclid Satellite
• Cosmology and fundamental physics with the Euclid satellite
• Dark D-brane Cosmology
• Unified Superfluid Dark Sector
• Analysing dissipative effects in the $\Lambda$CDM model
• Reduced modified Chaplygin gas cosmology
• CMB-Galaxy correlation in Unified Dark Matter Scalar Field Cosmologies
• Raychaudhuri equation in $k$-essence geometry: conditional singular and non-singular cosmological models
• Dynamics of Dirac-Born-Infeld dark energy interacting with dark matter
• Dark D-Brane Cosmology: from background evolution to cosmological perturbations
• Assessing the foundation and applicability of some dark energy fluid models in the Dirac-Born-Infeld framework
• The growth of DM and DE perturbations in DBI non-canonical scalar field scenario
• Bouncing cosmologies in the presence of a Dirac-Born-Infeld field