Malik, Karim A. (2005) Gauge-invariant perturbations at second order: multiple scalar fields on large scales. Journal of Cosmology and Astroparticle Physics, 0511. 005. ISSN 1475-7516Full text not available from this repository.
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.
|Journal or Publication Title:||Journal of Cosmology and Astroparticle Physics|
|Uncontrolled Keywords:||cosmological perturbation theory ; inflation|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited By:||Ms Margaret Calder|
|Deposited On:||18 Jun 2008 13:57|
|Last Modified:||10 Dec 2016 02:03|
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