### Talk by Guillaume Cebron (Université Pierre et Marie Curie)

Date and Time: April 3, 10:00 AM in AP&M 6218

Title: Lévy processes on the unitary group in large dimension

Abstract:
It is known that the distribution of a random unitary matrix, under the heat kernel measure on the unitary group U(N), converges as N tends to infinity. I will discuss the convergence of the distribution of a random unitary matrix arising from a Lévy process on the unitary group U(N). The approach is based on the Schur-Weyl duality, and we will see that the asymptotic distribution is closely related to the counting of certain paths in the symmetric group.