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Gauge-invariant perturbations at second order: multiple scalar fields on large scales

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Gauge-invariant perturbations at second order: multiple scalar fields on large scales. / Malik, Karim A.
In: Journal of Cosmology and Astroparticle Physics, Vol. 0511, 11.2005, p. 005.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Malik, KA 2005, 'Gauge-invariant perturbations at second order: multiple scalar fields on large scales', Journal of Cosmology and Astroparticle Physics, vol. 0511, pp. 005. https://doi.org/10.1088/1475-7516/2005/11/005

APA

Malik, K. A. (2005). Gauge-invariant perturbations at second order: multiple scalar fields on large scales. Journal of Cosmology and Astroparticle Physics, 0511, 005. https://doi.org/10.1088/1475-7516/2005/11/005

Vancouver

Malik KA. Gauge-invariant perturbations at second order: multiple scalar fields on large scales. Journal of Cosmology and Astroparticle Physics. 2005 Nov;0511:005. doi: 10.1088/1475-7516/2005/11/005

Author

Malik, Karim A. / Gauge-invariant perturbations at second order: multiple scalar fields on large scales. In: Journal of Cosmology and Astroparticle Physics. 2005 ; Vol. 0511. pp. 005.

Bibtex

@article{ba32e48366ca4f909c3555b6f146f736,
title = "Gauge-invariant perturbations at second order: multiple scalar fields on large scales",
abstract = "We derive the governing equations for multiple scalar fields minimally coupled to gravity in a flat Friedmann–Robertson–Walker background spacetime on large scales. We include scalar perturbations up to second order and write the equations in terms of physically transparent gauge-invariant variables at first and second order. This allows us to write the perturbed Klein–Gordon equation at second order solely in terms of the field fluctuations on flat slices at first and second order.",
keywords = "cosmological perturbation theory, inflation",
author = "Malik, {Karim A.}",
year = "2005",
month = nov,
doi = "10.1088/1475-7516/2005/11/005",
language = "English",
volume = "0511",
pages = "005",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",

}

RIS

TY - JOUR

T1 - Gauge-invariant perturbations at second order: multiple scalar fields on large scales

AU - Malik, Karim A.

PY - 2005/11

Y1 - 2005/11

N2 - We derive the governing equations for multiple scalar fields minimally coupled to gravity in a flat Friedmann–Robertson–Walker background spacetime on large scales. We include scalar perturbations up to second order and write the equations in terms of physically transparent gauge-invariant variables at first and second order. This allows us to write the perturbed Klein–Gordon equation at second order solely in terms of the field fluctuations on flat slices at first and second order.

AB - We derive the governing equations for multiple scalar fields minimally coupled to gravity in a flat Friedmann–Robertson–Walker background spacetime on large scales. We include scalar perturbations up to second order and write the equations in terms of physically transparent gauge-invariant variables at first and second order. This allows us to write the perturbed Klein–Gordon equation at second order solely in terms of the field fluctuations on flat slices at first and second order.

KW - cosmological perturbation theory

KW - inflation

U2 - 10.1088/1475-7516/2005/11/005

DO - 10.1088/1475-7516/2005/11/005

M3 - Journal article

VL - 0511

SP - 005

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

ER -