Comment on Ricci dark energy in Chern–Simons modified gravity
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We revisit the Ricci dark energy in Chern–Simons modified gravity. As far as the cosmological evolution, this is nothing but the Ricci dark energy with a minimally coupled scalar without potential which means that the role of Chern–Simons term is suppressed. Using the equation of state parameter, this model is similar to the modified Chaplygin gas model only when two are around the de Sitter universe deriving by the cosmological constant in the future. However, the two past evolutions are different.
KeywordsDark Energy Cosmological Constant Friedmann Equation Cosmological Evolution Ricci Dark Energy
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2012-R1A1A2A10040499).