Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2007-01-22
Phys.Rev.D75:087302,2007
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
4 pages: v2 has minor changes to match published version
Scientific paper
10.1103/PhysRevD.75.087302
This note derives the analogue of the Mukhanov-Sasaki variables both for
scalar and tensor perturbations in the 1+3 covariant formalism. The possibility
of generalizing them to non-flat Friedmann-Lemaitre universes is discussed.
Pitrou Cyril
Uzan Jean-Philippe
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