Schr\"odinger cat state of a Bose-Einstein condensate in a double-well   potential
  We consider a weakly interacting coherently coupled Bose-Einstein condensate in a double-well potential. We show by means of stochastic simulations that the system could possibly be driven to an entangled macroscopic superposition state or a Schr\"odinger cat state by means of a continuous quantum measurement process. 
J. Ruostekoski