A note about the back-reaction of inhomogeneities on the expansion of the Universe

Details A note about the back-reaction of inhomogeneities on the expansion of the Universe A note about the back-reaction of inhomogeneities on the expansion of the Universe

2009-06-23

arxiv.org/abs/0906.4278v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, no figure. Comments are welcomed. v2: Effect of second order perturbations is discussed; few references added

Scientific paper

In this short note we summarize the arguments against a significant
back-reaction of inhomogeneities on the acceleration of the Universe. We also
present a quick way to access the importance of back-reaction using the Fourier
space presentation of inhomogeneities and properties of their power spectrum.

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