2003/11/20 by Winfried Zimdahl, Diego Pavon · 1 citation
Physics and Astronomy · #gr-qc #astro-ph #hep-ph #hep-th
paper · pdf · doi:10.1023/b:gerg.0000022584.54115.9e
published as Gen.Rel.Grav. 36 (2004) 1483-1491 · 11 pages, two encapsulated eps figures, key words: cosmology, accelerated expansion, statefinder parameters
arxiv created 2003/11/20 · arxiv updated 2009/12/01
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.