nLab Wiener measure




The Wiener measure is a measure on the space of continuous paths in a given manifold. The Lebesgue integral with respect to Wiener’s measure is called the Wiener integral.

The Wiener measure serves to make precise the path integral quantization for the (charged) non-relativistic particle (that of the relativistic particle may be amenable to Wiener measure methods via Wick rotation, i.e. analytic continuation to imaginary time. ).


A textbook account in the context of path integral quantization is

  • Barry Simon, around p. 49 in: Functional integration and quantum physics, AMS Chelsea Publ., Providence, 2005

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