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A tracial quantum central limit theorem

Greg Kuperberg
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Abstract

We prove a central limit theorem for non-commutative random variables in a von Neumann algebra with a tracial state: Any non-commutative polynomial of averages of i.i.d. samples converges to a classical limit. The proof is based on a central limit theorem for ordered joint distributions together with a commutator estimate related to the Baker-Campbell-Hausdorff expansion. The result can be considered a generalization of Johansson's theorem on the limiting distribution of the shape of a random word in a fixed alphabet as its length goes to infinity [math.CO/9906120,math.PR/9909104].

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Greg Kuperberg. 2002-02-23. A tracial quantum central limit theorem. https://arxiv.org/abs/math-ph/0202035

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