2009/12/31 by Shin'ichi Nojiri, SHIN'ICHI NOJIRI · 1 citation
Computer Science · Physics and Astronomy · #Black Holes and Theoretical Physics #Computational Physics and Python Applications #Construct (python library) #Cosmology and Gravitation Theories #Dark energy #Development (topology) #Einstein #Hubble's law #Inverse problem #Universe #Variety (cybernetics) #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1142/s0217732310000022
published as Mod.Phys.Lett.A25:859-873,2010 · LaTeX 11 pages, references are added, to appear in Proceedings of International Workshop on Dark Matter, Dark Energy and Matter-Antimatter Asymmetry, National Tsing Hua University, Hsinchu, Taiwan, November 20-21, 2009
arxiv created 2010/01/05 · openalex publication_date 2010/04/20 · arxiv updated 2010/04/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We review how we can construct the gravity models which reproduces the arbitrary development of the universe. We consider the reconstruction in the Einstein gravity coupled with generalized perfect fluid, scalar-Einstein gravity, scalar-Einstein-Gauss-Bonnet gravity, Einstein-[Formula: see text]-gravity, and F(R)-gravity. Very explicit formulas are given to reconstruct the models, which could be used when we find the detailed data of the development of the universe by future observations. Especially we find the formulas using e -foldings, which has a direct relation with observed redshift. As long as we observe the time development of the Hubble rate H, there exists a variety of models describing the arbitrary development of universe.