Statefinder parameters in two dark energy models

2007/12/07 by Grigoris Panotopoulos · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph

paper · pdf · doi:10.1016/j.nuclphysb.2007.12.001

published as Nucl.Phys.B796:66-76,2008 · 16 pages, 2 tables, 7 figures

arxiv created 2007/12/07 · openalex publication_date 2008/01/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

The statefinder parameters (r,s) in two dark energy models are studied. In the first, we discuss in four-dimensional General Relativity a two fluid model, in which dark energy and dark matter are allowed to interact with each other. In the second model, we consider the DGP brane model generalized by taking a possible energy exchange between the brane and the bulk into account. We determine the values of the statefinder parameters that correspond to the unique attractor of the system at hand. Furthermore, we produce plots in which we show s, r as functions of red-shift, and the (s–r) plane for each model.

Citations

• Reconstruction of interacting dark energy models from parametrizations
• Statefinder -- a new geometrical diagnostic of dark energy
• Cosmological evolution of interacting phantom energy with dark matter
• Oscillating quintom and the recurrent universe
• THE EVOLUTION OF THE UNIVERSE WITH THE B–I TYPE PHANTOM SCALAR FIELD
• Dynamics of dark energy
• Cosmological consequences of a rolling homogeneous scalar field
• Gravity on a brane in infinite-volume extra space

Cited by

• Discriminating dark energy models by using the Statefinder hierarchy and the growth rate of matter perturbations