Tuesday 7th of June, 14:00, Sapienza Università di Roma, Dipartimento di Matematica, Sala di Consiglio.

Speaker: Amine Asselah (Paris-Est Créteil)

Title: Visiting a ball for critical branching random walks in d=4 and d>4

Abstract: We study a critical branching random walk (BRW) on the Euclidean lattice. We focus on the tail of the time spent in a ball, in particular on the special features of the critical dimension four. We focus on the tail of the number of walks transported by the BRW on the boundary of a distant ball, and on the BRWs localized in a ball.