Flat Universe with Hyperbolic Voids
arXiv:0805.4279 · doi:10.1209/0295-5075/86/29002
Abstract
The properties of geodesics flow are studied in a Friedmann-Robertson-Walker metric perturbed due to the inhomogeneities of matter. The basic, averaged Jacobi equation is derived, which reveals that the low density regions (voids) are able to induce hyperbolicity, even if the global curvature of the Universe is zero or slightly positive. It is shown that the energy independence is a characteristic property of these geometric effects. The importance of these conclusions is determined by the temperature independent ellipticity of excursion sets and regions of different randomness found in Kolmogorov CMB maps.
Europhys.Lett., in press
References in corpus (18)
- Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
- Weak Gravitational Lensing of the CMB
- Dark Energy from structure: a status report
- An Imprint of Super-Structures on the Microwave Background due to the Integrated Sachs-Wolfe Effect
- The Uncorrelated Universe: Statistical Anisotropy and the Vanishing Angular Correlation Function in WMAP Years 1-3
- Cosmic clocks, cosmic variance and cosmic averages
- A New Method for Determining Cumulative Gravitational Lensing Effects in Inhomogeneous Universes
- Testing backreaction effects with observations
- On the curvature of the present-day Universe
- Correlating anomalies of the microwave sky: The Good, the Evil and the Axis
- Gravitational energy as dark energy: Concordance of cosmological tests
- Kolmogorov cosmic microwave background sky
- Kolmogorov stochasticity parameter measuring the randomness in Cosmic Microwave Background
- Porosity criterion for hyperbolic voids and the cosmic microwave background
- Ellipticity in Cosmic Microwave Background as a Tracer of Large-Scale Universe
- Large Scale Plane-Mirroring in the Cosmic Microwave Background WMAP5 Maps
Cited by in corpus (9)
- On CCC-predicted concentric low-variance circles in the CMB sky
- Kolmogorov cosmic microwave background sky
- To the center of cold spot with Planck
- Time arrow is influenced by the dark energy
- Cosmic voids and induced hyperbolicity
- Cosmic voids and induced hyperbolicity. II. Sensitivity to void/wall scales
- Cosmic voids and induced hyperbolicity. III. tracing redshift dependence
- Smearing of primordial gravitational waves
- On the time arrows, and randomness in cosmological signals