Stochastic Schroedinger Equations with General Complex Gaussian Noises
  Within the framework of stochastic Schroedinger equations, we show that the correspondence between statevector equations and ensemble equations is infinitely many to one, and we discuss the consequences. We also generalize the results of [Phys. Lett. A 224, p. 25 (1996)] to the case of more general complex Gaussian noises and analyze the two important cases of purely real and purely imaginary stochastic processes. 
Angelo Bassi