Evolution of second-order cosmological perturbations

K. Malik; David Wands

doi:10.1088/0264-9381/21/11/L01

Evolution of second-order cosmological perturbations

K. Malik, David Wands

Institute of Cosmology & Gravitation

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Abstract

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

Original language	English
Pages (from-to)	L65-L71
Journal	Classical and Quantum Gravity
Volume	21
Issue number	11
DOIs	https://doi.org/10.1088/0264-9381/21/11/L01
Publication status	Published - 7 Jan 2004

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abstract = "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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AB - 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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JO - Classical and Quantum Gravity

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Evolution of second-order cosmological perturbations

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