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arXiv · 2008.12300

Analytic solutions of scalar perturbations induced by scalar perturbations

Keisuke Inomata
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Abstract

We study scalar perturbations induced by scalar perturbations through the non-linear interaction appearing at second order in perturbations. We derive analytic solutions of the induced scalar perturbations in a perfect fluid. In particular, we consider the perturbations in a radiation-dominated era and a matter-dominated era. With the analytic solutions, we also discuss the power spectra of the induced perturbations.

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Keisuke Inomata. 2020-08-27. Analytic solutions of scalar perturbations induced by scalar perturbations. https://doi.org/10.1088/1475-7516/2021/03/013

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