A late-accelerating universe with no dark energy - and a finite-temperature big bang

Abstract

Brane-world models offer the possibility of explaining the late acceleration of the universe via infra-red modifications to General Relativity, rather than a dark energy field. However, one also expects ultra-violet modifications to General Relativity, when high-energy stringy effects in the early universe begin to grow. We generalize the DGP brane-world model via an ultra-violet modification, in the form of a Gauss-Bonnet term in the bulk action. The combination of infra-red and ultra-violet modifications produces an intriguing cosmology. The DGP feature of late-time acceleration without dark energy is preserved, but there is an entirely new feature - there is no hot big bang in the early universe. The universe starts with finite density and pressure, from a "sudden" curvature singularity.

revised title and minor improvements, additional references; to appear JCAP

References in corpus (27)

• 4D Gravity on a Brane in 5D Minkowski Space
• Cosmology on a Brane in Minkowski Bulk
• Strong Interactions and Stability in the DGP Model
• Nonperturbative Continuity in Graviton Mass versus Perturbative Discontinuity
• Classical and Quantum Consistency of the DGP Model
• Sudden Future Singularities
• Generalised Israel Junction Conditions for a Gauss-Bonnet Brane World
• Opening up extra dimensions at ultra-large scales
• Brane World Cosmology
• General Gauss-Bonnet brane cosmology
• Friedmann-Robertson-Walker brane cosmological equations from the five-dimensional bulk (A)dS black hole
• New Cosmological Singularities in Braneworld Models
• Brane Cosmologies without Orbifolds
• Israel conditions for the Gauss-Bonnet theory and the Friedmann equation on the brane universe
• Inflation in Gauss-Bonnet Brane Cosmology
• Brane cosmology with curvature corrections
• Covariant Gravitational Equations on Brane World with Gauss-Bonnet term
• Weak gravity in DGP braneworld model
• Cosmological perturbations from braneworld inflation with a Gauss-Bonnet term
• Cosmic acceleration from asymmetric branes
• Gravitational Shock Waves and Their Scattering in Brane-Induced Gravity
• Infra-red modification of gravity from asymmetric branes
• Gauss-Bonnet gravity renders negative tension braneworlds unstable
• Warped Phenomenology of Higher-Derivative Gravity
• Brane induced gravity from asymmetric warped compactification
• Cosmological perturbations of brane-induced gravity and the vDVZ discontinuity on FLRW space-times
• Effective actions of a Gauss-Bonnet brane world with brane curvature terms

Cited by in corpus (47)

• Classification of cosmological milestones
• Slow-roll inflation with a Gauss-Bonnet correction
• Holographic Dark Energy in Braneworld Models with a Gauss-Bonnet Term in the Bulk. Interacting Behavior and the w =-1 Crossing
• Power spectra from an inflaton coupled to the Gauss-Bonnet term
• Inflation coupled to a Gauss-Bonnet term
• f(R)-Brane
• Late acceleration and $w=-1$ crossing in induced gravity
• Mimicking Lambda with a spin-two ghost condensate
• The cosmology of an holographic induced gravity model with curvature effects
• Collider Signals of Gravitational Fixed Points
• Appeasing the Phantom Menace?
• String inspired explanation for the super-acceleration of our universe
• The holographic induced gravity model with a Ricci dark energy: smoothing the little rip and big rip through Gauss-Bonnet effects?
• Phantom singularities and their quantum fate: general relativity and beyond
• Cosmological singularities in Born-Infeld determinantal gravity
• Gauss-Bonnet gravity, brane world models, and non-minimal coupling
• Phantom-like behaviour in a brane-world model with curvature effects
• The transition of equation of state of effective dark energy in the DGP model with bulk contents
• Gauss-Bonnet Cosmology with Induced Gravity and Non-Minimally Coupled Scalar Field on the Brane
• Modified brane cosmologies with induced gravity, arbitrary matter content and a Gauss-Bonnet term in the bulk
• Statefinder parameters in two dark energy models
• Crossing the phantom divide in brane cosmology with curvature corrections and brane-bulk energy transfer
• Modified GBIG Scenario as an Alternative for Dark Energy
• A Braneworld Dark Energy Model with Induced Gravity and the Gauss-Bonnet Effect
• Brane Universes with Gauss-Bonnet-Induced-Gravity
• k-essence in the DGP brane-world cosmology
• Modified Friedmann Equation and Inflation in Warped Codimension-two Braneworld
• Observational constrains on the DGP brane-world model with a Gauss-Bonnet term in the bulk
• Cosmological equations and Thermodynamics on Apparent Horizon in Thick Braneworld
• Gauss-Bonnet braneworld redux: A novel scenario for the bouncing universe
• Scalar perturbations from brane-world inflation with curvature effects
• Curvaton Dynamics in Brane-worlds
• Observational constraints on Chaplygin cosmology in a braneworld scenario with induced gravity and curvature effect
• Gravitino dark matter in brane-world cosmology
• Assisted chaotic inflation in brane-world cosmology
• Thermodynamical analysis on a braneworld scenario with curvature corrections
• Late-time cosmic acceleration: Dark gravity
• Phantom-like effects in asymmetric brane embedding with induced gravity and the Gauss-Bonnet term in the Bulk
• Dark matter in supersymmetric models with axino LSP in Randall-Sundrum II brane model
• Exploring the cosmic censorship conjecture with a Gauss-Bonnet sector
• Anisotropic Extra Dimensions
• Exact solutions in a scalar-tensor model of dark energy
• Constraints on fourth order gravity from binary pulsar and gravitational waves
• Equation of state and singularities in FLRW cosmological models
• Gauss Bonnet dark energy Chaplygin Gas Model
• Conical singularities regularized in warped six-dimensional flux compactification and their induced brane cosmology
• Role of Gauss-Bonnet corrections in a DGP brane gravitational collapse