Curvature force and dark energy

Abstract

A curvature self-interaction of the cosmic gas is shown to mimic a cosmological constant or other forms of dark energy, such as a rolling tachyon condensate or a Chaplygin gas. Any given Hubble rate and deceleration parameter can be traced back to the action of an effective curvature force on the gas particles. This force self-consistently reacts back on the cosmological dynamics. The links between an imperfect fluid description, a kinetic description with effective antifriction forces, and curvature forces, which represent a non-minimal coupling of gravity to matter, are established.

14 pages; references added, to appear in New Journal of Physics (v3)

References in corpus (19)

• Cosmology and the Fate of Dilatation Symmetry
• Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification
• Curvature Quintessence
• Rolling Tachyon
• Tachyon Matter
• Accelerated expansion of the universe driven by tachyonic matter
• Unification of Dark Matter and Dark Energy: the Inhomogeneous Chaplygin Gas
• Field Theory of Tachyon Matter
• Interacting Quintessence
• Cosmological Evolution of the Rolling Tachyon
• Power-Law Inflation from the Rolling Tachyon
• Prospects and Problems of Tachyon Matter Cosmology
• Inflation from a Tachyon Fluid?
• Baryon bias and structure formation in an accelerating universe
• Brane cosmology driven by the rolling tachyon
• Scaling Cosmology
• Cosmological parameters are dressed
• Can Structure Formation Influence the Cosmological Evolution?
• Conformal Symmetry and Cosmological Entropy Production

Cited by in corpus (66)

• Cosmological parameters from SDSS and WMAP
• Dark Energy Anisotropic Stress and Large Scale Structure Formation
• Interacting holographic dark energy model in non-flat universe
• Interacting Holographic Phantom
• Equation of state for an interacting holographic dark energy model
• Dark energy from backreaction
• Bulk Viscous Cosmology
• Accelerated expansion from structure formation
• Interacting holographic dark energy
• Light propagation in statistically homogeneous and isotropic dust universes
• The Cosmological Dynamics of Interacting Holographic Dark Energy Model
• Viscous dark fluid universe
• Light propagation in statistically homogeneous and isotropic universes with general matter content
• Thermodynamical Interpretation of the Interacting Holographic Dark Energy Model in a non-flat Universe
• Evaluating backreaction with the peak model of structure formation
• Constraints on dissipative unified dark matter
• Interacting Dark Energy and the Cosmic Coincidence Problem
• Bulk viscous cosmology with causal transport theory
• Non-adiabatic dark fluid cosmology
• Shear and rotation in Chaplygin cosmology
• Constraints on Exotic Matter for An Emergent Universe
• The onset of the non-linear regime in unified dark matter models
• A New Approach to Cosmological Bulk Viscosity
• Phantom dark energy as an effect of bulk viscosity
• Chaplygin gas with non-adiabatic pressure perturbations
• An Interacting Dark Energy Model for the Expansion History of the Universe
• Emergent Universe from A Composition of Matter, Exotic Matter and Dark Energy
• Coupling Quintessence to Inflation in Supergravity
• Measuring the Chaplygin gas equation of state from angular and luminosity distances
• Polytropic dark matter flows illuminate dark energy and accelerated expansion
• Crossing the phantom divide with dissipative normal matter in the Israel-Stewart-Hiscock formalism
• Viscous Generalized Chaplygin Gas Interacting with f(R,T) gravity
• Could Dark Matter Interactions be an Alternative to Dark Energy ?
• Observational Constraints on Interacting Dark Matter Model Without Dark Energy
• Viscous Dark Energy in $f(T)$ Gravity
• Viscous Generalized Chaplygin Gas as a Unified Dark Fluid: Including Perturbation of Bulk Viscosity
• A conventional approach to the dark-energy concept
• Dark Energy: The Shadowy Reflection of Dark Matter?
• Archimedean-type force in a cosmic dark fluid: I. Exact solutions for the late-time accelerated expansion
• Sourced Friedmann equations with holographic energy density
• Extended $\Lambda$CDM model
• Archimedean-type force in a cosmic dark fluid: II. Qualitative and numerical study of a multistage Universe expansion
• Phantom Instability of Viscous Dark Energy in Anisotropic Space-Time
• Anisotropic cosmological models with non-minimally coupled magnetic field
• Holographic interacting dark energy in the braneworld cosmology
• Can cosmic acceleration be caused by exotic massless particles?
• Interacting Viscous Dark Energy in Bianchi Type-I Universe
• Relativistic Viscous Universe Models
• Cosmic bulk viscosity through backreaction
• Non-flat universe and interacting dark energy model
• Interacting holographic dark energy in the scalar-Gauss-Bonnet gravity
• Viscous Dark Energy and Phantom Field in An Anisotropic Universe
• Spherical top-hat Collapse of a Viscous Unified Dark Fluid
• Cosmological perturbations in the $\Lambda$CDM-like limit of a polytropic dark matter model
• Effects of Dark Energy anisotropic stress on the matter power spectrum
• Interacting Viscous Dark Energy in Bianchi Type-III Universe
• The Maxwell--Boltzmann gas with non-standard self--interactions: a novel approach to galactic dark matter
• Curvature Coupling and Accelerated Expansion of the Universe
• Thermodynamics of viscous dark energy for the late future time universe
• Massive gravitons dark matter scenario revisited
• Viscous fluid dynamics with decaying vacuum energy density
• Viscous Cold Dark Matter in agreement with observations
• Late time cosmological solutions in $f(R,T)$ gravity in a viscous Universe
• Dynamical friction shear and rotation in Chaplygin cosmology
• A cyclic universe with colour fields
• Dark Energy Density and IS (Israel-Stewart) Bulk Viscosity Model