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Paper detail

Cutoff profiles for quantum Lévy processes and quantum random transpositions

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.

preprint2021arXivOpen access
Amaury FreslonLucas TeyssierSimeng Wang
math.OAmath.QAmath.PR
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Amaury FreslonLucas TeyssierSimeng Wang

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