Evolution of second-order cosmological perturbations

Details Evolution of second-order cosmological perturbations Evolution of second-order cosmological perturbations

2003-07-02

arxiv.org/abs/astro-ph/0307055v3

Class.Quant.Grav.21:L65-L72,2004

Astronomy and Astrophysics

Astrophysics

5 pages, latex with revtex, no figures; v2 minor changes and references added

Scientific paper

10.1088/0264-9381/21/11/L01

We present a method for constructing gauge-invariant cosmological perturbations which are gauge-invariant up to second order. As an example we give the gauge-invariant definition of the second-order curvature perturbation on uniform density hypersurfaces. Using only the energy conservation equation we show that this curvature perturbation is conserved at second order on large scales for adiabatic perturbations.

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