Flat Universe with Hyperbolic Voids

Details Flat Universe with Hyperbolic Voids Flat Universe with Hyperbolic Voids

2008-05-28

arxiv.org/abs/0805.4279v2

Europhys.Lett.86:29002,2009

Astronomy and Astrophysics

Astrophysics

Europhys.Lett., in press

Scientific paper

10.1209/0295-5075/86/29002

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.

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