Localized tendency for the superfluid and Mott insulator state in the   array of dissipative cavities
  The features of superfluid-Mott insulator phase transition in the array of dissipative cavities is analyzed. Employing a kind of quasi-boson and a mean-filed approach, we show analytically how dissipation and decoherence influence the critical behaviors and the time evolution of the system. We find that there is a localized tendency, which could lead to the break of superfluidity for a superfluid state and suppress the appearance of the long-range order form a Mott state. Eventually, a collection of mixture states localized on each site will arise. 
Lei Tan, Ke Liu, Chun-Hai lv, Wu-Ming Liu
quant-ph