Unified dark fluid in Brans-Dicke theory

Abstract

Anisotropic dark energy cosmological models are constructed in the frame work of generalised Brans-Dicke theory with a self interacting potential. Wet dark fluid characterized by a linear equation of state is considered as the source of dark energy. Shear scalar is considered to be proportional to the expansion scalar simulating an anisotropic relationship among the directional expansion rates. The dynamics of the universe in presence of wet dark fluid in anisotropic background have been discussed. The presence of evolving scalar field makes it possible to get accelerating phase of expansion even for a linear relationship among the directional Hubble rates. It is found that, the anisotropy in expansion rates does not affect the scalar field, self interacting potential but it controls the non-evolving part of the Brans- Dicke parameter.

27 pages, 8 figures, to appear in Eur. Phys. J. C

References in corpus (25)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Data Processing, Sky Maps, and Basic Results
• A Dark Energy Model Characterized by the Age of the Universe
• A New Model of Agegraphic Dark Energy
• SNLS3: Constraints on Dark Energy Combining the Supernova Legacy Survey Three Year Data with Other Probes
• Inflationary Universe with Anisotropic Hair
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectra
• A kinematical approach to dark energy studies
• Cosmic Microwave Background Quadrupole and Ellipsoidal Universe
• Ellipsoidal Universe Can Solve The CMB Quadrupole Problem
• Constraints on scalar-tensor models of dark energy from observational and local gravity tests
• Thermodynamical description of the interaction between holographic dark energy and dark matter
• Anisotropic Dark Energy: Dynamics of Background and Perturbations
• Observational signatures of Jordan-Brans-Dicke theories of gravity
• A Model of Universe Anisotropization
• $\Lambda \alpha$DM: Observational constraints on unified dark matter with constant speed of sound
• Constraints on the Brans-Dicke gravity theory with the Planck data
• A Complete Statistical Analysis for the Quadrupole Amplitude in an Ellipsoidal Universe
• Anisotropic dark energy and ellipsoidal universe
• Bianchi type VI1 cosmological model with wet dark fluid in scale invariant theory of gravitation
• Observational constraints on unified dark matter including Hubble parameter data
• Cosmological Constraints on Ghost Dark Energy in the Brans-Dicke Theory by Using MCMC Approach
• Cosmic Acceleration and Anisotropic models with Magnetic field
• A Concordant "Freely Coasting Cosmology"

Cited by in corpus (17)

• A complete cosmological scenario from $f(R,T^{\phi })$ gravity theory
• Anisotropic dark energy model with a hybrid scale factor
• Cosmic Transit and Anisotropic Models in f(R,T) Gravity
• Anisotropic cosmological reconstruction in $f(R,T)$ gravity
• Anisotropic solutions in f(R) Gravity
• Modeling of accelerating Universe with bulk viscous fluid in Bianchi V space-time
• Unified Dark Fluid and Cosmic Transit Models in Brans-Dicke Theory
• Linearized physics and gravitational-waves polarizations in the Palatini formalism of GBD theory
• Cosmic Acceleration and Anisotropic models with Magnetic field
• Linearized modified gravity theories and gravitational waves physics in the GBD theory
• Cosmology in Brans-Dicke-de Rham-Gabadadze-Tolley massive gravity
• Stability analysis of two-fluid dark energy models
• f(R,T) Gravity Model Behaving as a Dark Energy Source
• A Higher Dimensional Cosmological Model for the Search of Dark Energy Source
• Cosmological Model with Cosmic transit behaviour in Brans-Dicke Theory
• Evolution of Generalized Brans-Dicke parameter within a Superbounce scenario
• Physical Implications and Updated Observational Constraints of the PAge-like Unified Dark Fluid Model