Cosmological perturbations in Kaluza-Klein models

Details Cosmological perturbations in Kaluza-Klein models Cosmological perturbations in Kaluza-Klein models

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvd..33.2147a&link_type=abstract

Physical Review D (Particles and Fields), Volume 33, Issue 8, 15 April 1986, pp.2147-2163

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30

Field Theories In Dimensions Other Than Four, Gravity In More Than Four Dimensions, Kaluza-Klein Theory, Unified Field Theories, Alternative Theories Of Gravity, Particle-Theory And Field-Theory Models Of The Early Universe

Scientific paper

Recent works have studied the classical cosmology of the early Universe in Kaluza-Klein models considered as product spaces. In this paper, the growth of cosmological perturbations is examined as a natural extension of established works concerning three-dimensional cases. Appropriate gauge-invariant quantities are defined, and the perturbed field equations are expressed in terms of these. Leading-order solutions are derived for the region in which most of the growth occurs. Difficulties with the models and the sensitivity to model variations are discussed.

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