Scale dependence of cosmological backreaction

Li N, Schwarz D (2008)
PHYSICAL REVIEW D 78(8).

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Because of the noncommutation of spatial averaging and temporal evolution, inhomogeneities and anisotropies (cosmic structures) influence the evolution of the averaged Universe via the cosmological backreaction mechanism. We study the backreaction effect as a function of averaging scale in a perturbative approach up to higher orders. We calculate the hierarchy of the critical scales, at which 10% effects show up from averaging at different orders. The dominant contribution comes from the averaged spatial curvature, observable up to scales of similar to 200 Mpc. The cosmic variance of the local Hubble rate is 10% (5%) for spherical regions of radius 40 (60) Mpc. We compare our result to the one from Newtonian cosmology and Hubble Space Telescope Key Project data.
Erscheinungsjahr
2008
Zeitschriftentitel
PHYSICAL REVIEW D
Band
78
Ausgabe
8
ISSN
1550-7998
eISSN
1550-2368
Page URI
https://pub.uni-bielefeld.de/record/1585412

Zitieren

Li N, Schwarz D. Scale dependence of cosmological backreaction. PHYSICAL REVIEW D. 2008;78(8).
Li, N., & Schwarz, D. (2008). Scale dependence of cosmological backreaction. PHYSICAL REVIEW D, 78(8). doi:10.1103/PhysRevD.78.083531
Li, N., and Schwarz, D. (2008). Scale dependence of cosmological backreaction. PHYSICAL REVIEW D 78.
Li, N., & Schwarz, D., 2008. Scale dependence of cosmological backreaction. PHYSICAL REVIEW D, 78(8).
N. Li and D. Schwarz, “Scale dependence of cosmological backreaction”, PHYSICAL REVIEW D, vol. 78, 2008.
Li, N., Schwarz, D.: Scale dependence of cosmological backreaction. PHYSICAL REVIEW D. 78, (2008).
Li, Nan, and Schwarz, Dominik. “Scale dependence of cosmological backreaction”. PHYSICAL REVIEW D 78.8 (2008).

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arXiv: 0710.5073

Inspire: 765559

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