Accelerating the Universe with Gravitational Waves
arXiv:0909.1922 · doi:10.1088/1475-7516/2010/02/011
Abstract
Inflation generically produces primordial gravitational waves with a red spectral tilt. In this paper we calculate the backreaction produced by these gravitational waves on the expansion of the universe. We find that in radiation domination the backreaction acts as a relativistic fluid, while in matter domination a small dark energy emerges with an equation of state w=-8/9.
18 pages, 4 figures. Replaced with version published by JCAP - some discussion and references added concerning second-order gravitational waves, typeset in JHEP style
References in corpus (22)
- Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- Gravitational Wave Spectrum Induced by Primordial Scalar Perturbations
- The cosmological gravitational wave background from primordial density perturbations
- Lemaitre-Tolman-Bondi model and accelerating expansion
- On cosmological observables in a swiss-cheese universe
- Mimicking Dark Energy with Lemaitre-Tolman-Bondi Models: Weak Central Singularities and Critical Points
- A (giant) void is not mandatory to explain away dark energy with a Lemaitre - Tolman model
- Scale dependence of cosmological backreaction
- Luminosity distance in "Swiss cheese" cosmology with randomized voids: I. Single void size
- The influence of structure formation on the cosmic expansion
- Spatially averaged cosmology in an arbitrary coordinate system
- Cosmological Backreaction from Perturbations
- The Spatial Averaging Limit of Covariant Macroscopic Gravity - Scalar Corrections to the Cosmological Equations
- Averaging Robertson-Walker Cosmologies
- Backreaction of Cosmological Perturbations in Covariant Macroscopic Gravity
- Covariant coarse-graining of inhomogeneous dust flow in General Relativity
- A Complete Cosmological Solution to the Averaged Einstein Field Equations as found in Macroscopic Gravity
- The Averaging Problem in Cosmology
- Metric Renormalization in General Relativity
- Lowest order covariant averaging of a perturbed metric and of the Einstein tensor
- Lowest order covariant averaging of a perturbed metric and of the Einstein tensor II
Cited by in corpus (7)
- A covariant and gauge invariant formulation of the cosmological "backreaction"
- Evolution of vacuum fluctuations generated during and before inflation
- Lagrangian theory of structure formation in relativistic cosmology. IV. Lagrangian approach to gravitational waves
- Backreaction: Gauge and Frame Dependences
- On the physical effects of consistent cosmological averaging
- Do Bound Structures Brake Cosmic Acceleration?
- Long-wavelength gravitational waves and cosmic acceleration