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arXiv · 0903.3264

Gauges and Cosmological Backreaction

Iain A. Brown·Juliane Behrend·Karim A. Malik
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Abstract

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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Iain A. Brown, Juliane Behrend, Karim A. Malik. 2009-03-19. Gauges and Cosmological Backreaction. https://doi.org/10.1088/1475-7516/2009/11/027

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