On the Ricci dark energy model
  We study the Ricci dark energy model (RDE) which was introduced as an alternative to the holographic dark energy model. We point out that an accelerating phase of the RDE is that of a constant dark energy model. This implies that the RDE may not be a new model of explaining the present accelerating universe. 
Kyoung Yee Kim, Hyung Won Lee, and Yun Soo Myung