Turbulence in a Bose-Einstein Condensate of Dipolar Excitons in Coupled   Quantum Wells
  The nonlinear dynamics of a Bose-Einstein condensate (BEC) of dipolar excitons trapped in an external confining potential in coupled quantum wells is analysed. It is demonstrated that under typical experimental conditions the dipolar excitons BEC can be described by a generalized Gross-Pitaevskii equation with the local interaction between the excitons, which depends on the exciton distribution function. It is shown that, if the system is pumped at sufficiently high frequencies, a steady turbulent state can be formed. 
O. L. Berman, R. Ya. Kezerashvili, G. V. Kolmakov, and Yu. E. Lozovik
cond-mat.quant-gas cond-mat.mes-hall