Evolution of the Density Contrast with Particle Production in a Gauge-Invariant Formalism

Details Evolution of the Density Contrast with Particle Production in a Gauge-Invariant Formalism Evolution of the Density Contrast with Particle Production in a Gauge-Invariant Formalism

2001-03-22

arxiv.org/abs/gr-qc/0103082v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

17 pages

Scientific paper

In this work we derive the evolution equation for the density contrast considering open system cosmology, where the influence of adiabatic particle production process on the dynamic of a homogeneous and isotropic is investigated within a manifestly covariant formulation. As application we derive the solution for two sources, one of them is a generalization of Prigogine's model. Then we establish the condition for the reach of the non-linear regime for the density contrast which turns out to be a necessary condition for the structure formation.

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