Gauge invariant averages for the cosmological backreaction

Details Gauge invariant averages for the cosmological backreaction Gauge invariant averages for the cosmological backreaction

2009-01-09

arxiv.org/abs/0901.1303v3

JCAP 0903:011,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

21 pages, no figures. Comments and references added, typos corrected. Small corrections and reference added, matches version p

Scientific paper

10.1088/1475-7516/2009/03/011

We show how to provide suitable gauge invariant prescriptions for the
classical spatial averages (resp. quantum expectation values) that are needed
in the evaluation of classical (resp. quantum) backreaction effects. We also
present examples illustrating how the use of gauge invariant prescriptions can
avoid interpretation problems and prevent misleading conclusions.

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