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arXiv · 2010.03273

Cutoff profiles for quantum L\'{e}vy processes and quantum random transpositions

Amaury Freslon·Lucas Teyssier·Simeng Wang
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Abstract

We consider a natural analogue of Brownian motion on free orthogonal quantum groups and prove that it exhibits a cutoff at time $N\ln(N)$. Then, we study the induced classical process on the real line and compute its atoms and density. This enables us to find the cutoff profile, which involves free Poisson distributions and the semi-circle law. We prove similar results for quantum permutations and quantum random transpositions.

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Amaury Freslon, Lucas Teyssier, Simeng Wang. 2020-10-07. Cutoff profiles for quantum L\'{e}vy processes and quantum random transpositions. https://arxiv.org/abs/2010.03273

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