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An example of a generalized Brownian motion

Communications in Mathematical Physics volume 137, pages 519–531 (1991)Cite this article

Abstract

We present an example of a generalized Brownian motion. It is given by creation and annihilation operators on a “twisted” Fock space ofL 2(ℝ). These operators fulfill (for a fixed −1≦μ≦1) the relationsc(f)c * (g)−μc * (g)c(f)=〈f,g〉1 (f, g ∈L 2(ℝ)). We show that the distribution of these operators with respect to the vacuum expectation is a generalized Gaussian distribution, in the sense that all moments can be calculated from the second moments with the help of a combinatorial formula. We also indicate that our Brownian motion is one component of ann-dimensional Brownian motion which is invariant under the quantum groupS ν U(n) of Woronowicz (withμ =v 2).

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Authors and Affiliations

  1. Instytut Matematyczny, Uniwersytet Wrocławski, Plac Grunwaldzki 2/4, PL-50-384, Wrocław, Poland

    Marek Bożejko

  2. Institut für Angewandte Mathematik, Universität Heidelberg, Im Neuenheimer Feld 294, W-6900, Heidelberg, Federal Republic of Germany

    Roland Speicher

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  1. Marek Bożejko
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  2. Roland Speicher
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Communicated by A. Connes

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Bożejko, M., Speicher, R. An example of a generalized Brownian motion. Commun.Math. Phys. 137, 519–531 (1991). https://doi.org/10.1007/BF02100275

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  • DOI: https://doi.org/10.1007/BF02100275

Keywords

  • Neural Network
  • Gaussian Distribution
  • Statistical Physic
  • Complex System
  • Brownian Motion