Eur. Phys. J. C (2013) 73: 2515
https://doi.org/10.1140/epjc/s10052-013-2515-6

Comment

Comment on Ricci dark energy in Chern–Simons modified gravity

Institute of Basic Science and Department of Computer Simulation, Inje University, Gimhae, 621-749, Korea

^* e-mail: ysmyung@inje.ac.kr

Received: 4 July 2013
Published online: 23 August 2013

Abstract

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.