Gauges and Cosmological Backreaction

Details Gauges and Cosmological Backreaction Gauges and Cosmological Backreaction

2009-03-19

arxiv.org/abs/0903.3264v3

JCAP 0911:027,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages. Updated: reference added, typos corrected, exposition clarified. Version 3: Replaced with version published by JCAP

Scientific paper

10.1088/1475-7516/2009/11/027

We present a formalism for spatial averaging in cosmology applicable to general spacetimes and coordinates, and allowing the easy incorporation of a wide variety of matter sources. We apply this formalism to a Friedmann-LeMaitre-Robertson-Walker universe perturbed to second-order and present the corrections to the background in an unfixed gauge. We then present the corrections that arise in uniform curvature and conformal Newtonian gauges.

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