Global properties of the growth index: Mathematical aspects and physical relevance

We analyze the global behavior of the growth index of cosmic inhomogeneities in an isotropic homogeneous universe filled by cold nonrelativistic matter and dark energy (DE) with an arbitrary equation of state. Using a dynamical system approach, we find the critical points of the system. That unique...

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Veröffentlicht in:	Physical review. D 2020-05, Vol.101 (10), p.1, Article 103501
Hauptverfasser:	Calderon, R., Felbacq, D., Gannouji, R., Polarski, D., Starobinsky, A. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astrophysics Asymptotic properties Critical point Dark energy Equations of state General Relativity and Quantum Cosmology Mathematical analysis Physics Saddle points Tracking
Online-Zugang:	Volltext
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