Evolution of density perturbations in a flat FRW universe

Details Evolution of density perturbations in a flat FRW universe Evolution of density perturbations in a flat FRW universe

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996phrvd..54.7237m&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 54, Issue 12, 15 December 1996, pp.7237-7242

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Origin And Formation Of The Universe, Post-Newtonian Approximation, Perturbation Theory, Related Approximations, Superclusters, Large-Scale Structure Of The Universe

Scientific paper

The gauge-invariant perturbation equations proposed in the preceding article are solved in this article in order to study the evolution of the energy density contrast in the radiation- and matter-dominated eras. The results are compared with earlier non-gauge-invariant as well as gauge-invariant treatments. In a number of cases the solutions are different. In the radiation-dominated era growing perturbations are found, where other treatments lead to constant or decaying energy density perturbations.

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