Diffusion Process Representations for a Scalar-Field Schrödinger Equation Solution in Rotating Coordinates

  • William M. McEneaneyEmail author
  • Ruobing Zhao
Part of the Springer INdAM Series book series (SINDAMS, volume 29)


A particular class of Schrödinger initial value problems is considered, wherein a particle moves in a scalar field centered at the origin, and more specifically, the distribution associated to the solution of the Schrödinger equation has negligible mass in the neighborhood of the origin. The Schrödinger equation is converted to the dequantized form, and a non-inertial frame centered along the trajectory of a classical particle is employed. A solution approximation as a series expansion in a small parameter is obtained through the use of complex-valued diffusion-process representations, where under a smoothness assumption, the expansion converges to the true solution. In the case of an expansion up through only the cubic terms in the space variable, there exist approximate solutions that are periodic with the period of a classical particle, but with an additional secular perturbation. The computations required for solution up to a finite order are purely analytical.


Stochastic control Schrödinger equation Hamilton–Jacobi Stationary action Staticization Complex-valued diffusion 



Research partially supported by AFOSR Grant FA9550-15-1-0131 and NSF Grant DMS-1312569.


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Authors and Affiliations

  1. 1.University of CaliforniaSan Diego, La JollaUSA

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