Dynamic phase transitions of a driven Ising chain in a dissipative   cavity
  We study the nonequilibrium quantum phase transition of an Ising chain in a dissipative cavity driven by an external transverse light field. When driving and dissipation are in balance, the system can reach a nonequilibrium steady state which undergoes a super-radiant phase transition as the driving strength increases. Interestingly, the super-radiant field changes the effective bias of the Ising chain in return and drives its own transition between the ferromagnetic and paramagnetic phase. We study the rich physics in this system with sophisticated behavior, and investigate important issues in its dynamics such as the stability of the system and criticality of the phase transition. 
Xi-Wang Luo, Yu-Na Zhang, Xingxiang Zhou, Guang-Can Guo, Zheng-Wei   Zhou
quant-ph