A note on crossing the phantom divide in hybrid dark energy model

Recently a lot of attention has been given to building dark energy models in which the equation-of-state parameter w can cross the phantom divide w=−1. However, to our knowledge, these models with crossing the phantom divide only provide the possibility that w can cross −1. They do not answer another question: why crossing phantom divide occurs recently? Since in many existing models whose equation-of-state parameter can cross the phantom divide, w undulates around −1 randomly, why are we living in an epochw<−1? This can be regarded as the second cosmological coincidence problem. In this Letter, we propose a possible approach to alleviate this problem within a hybrid dark energy model.