Cosmological Perturbation Theory
arXiv:1303.2509
Abstract
A short pedagogical overview of cosmological perturbation theory, following the lectures given during the brazilian school of cosmology held in August 2012. Topics treated are: I. The background II. SVT decomposition and the gauge issue. III. The example of the tensor modes. IV. Density fluctuations, transfer function and power spectrum. V. Initial condition theory: quantum vacuum fluctuations.
Lecture notes from the Mangaratiba cosmology school, August 2012. To appear in the proceedings (S. Perez Bergliaffa and M. Novello, Eds., 2013)