Cosmological perturbations and dynamical analysis for interacting quintessence

Abstract

We present the dynamical analysis for interacting quintessence, considering linear cosmological perturbations. Matter perturbations improve the background analysis and viable critical points describing the transition of the three cosmological eras are found. The stability of those fixed points are similar to previous studies in the literature, for both coupled and uncoupled cases, leading to a late-time attractor.

arXiv comment8 pages, 1 figure, references added, version accepted for publication in EPJC

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