Alessandra Bianchi

collaborators

3 papers

math.PR2026

The Ising Model on a Two-Community Stochastic Block Model

Alessandra Bianchi, Vanessa Jacquier, Matteo Sfragara

We study the Ising model on a two-community stochastic block model, where $n$ spins are split into two equal groups with inter-community interaction parameter $I^\pm_{n} \in [0, 1]$ . We pr…

math.PR2026

Mixing trichotomy for random walks on directed stochastic block models

Alessandra Bianchi, Giacomo Passuello, Matteo Quattropani

We consider a directed version of the classical Stochastic Block Model with $m \geq 2$ communities and a parameter $I^\pm$ controlling the inter-community connectivity. We show that, de…

math.PR2025

Limit theorems and lack thereof for a multilayer random walk mimicking human mobility

Alessandra Bianchi, Marco Lenci, FranÃ§oise PÃ¨ne

We introduce a continuous-time random walk model on an infinite multilayer structure inspired by transportation networks. Each layer is a copy of $R^{d}$ , indexed by a non-n…