Statefinder parameters for interacting dark energy

Abstract

We argue that the recently introduced "statefinder parameters" (Sahni et al., JETP Lett. 77, 201 (2003)), that include the third derivative of the cosmic scale factor, are useful tools to characterize interacting quitessence models. We specify the statefinder parameters for two classes of models that solve, or at least alleviate, the coincidence problem.

11 pages, two encapsulated eps figures, key words: cosmology, accelerated expansion, statefinder parameters

References in corpus (3)

• Exploring the Expanding Universe and Dark Energy using the Statefinder Diagnostic
• Interacting quintessence solution to the coincidence problem
• Scaling Cosmology

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