Phase space analysis of a holographic dark energy model
  The stability of interacting holographic dark energy model is discussed. It is found that for some class of the rate of interaction between dark matter and dark energy, the system has a natural solution where the universe had been decelerating in the begnning but finally settles down to an acelerated phase of expansion. 
Nandan Roy and Narayan Banerjee
gr-qc astro-ph.CO