3 papers
physics.soc-ph2026
Modeling financial transactions via random walks on temporal networks
Carolina E. Mattsson, Claudio Cellerini, Jaume Ojer +1
We model financial transactions as random walks on activity-driven temporal networks. By enforcing fund conservation, our framework analytically derives heavy-tailed distributions…
physics.soc-ph2025
Modeling individual attention dynamics on online social media
Jaume Ojer, Filippo Radicchi, Santo Fortunato +2
In the attention economy, understanding how individuals manage limited attention is critical. We introduce a simple model describing the decay of a user's engagement when facing mu…
physics.soc-ph2023
Charting multidimensional ideological polarization across demographic groups in the United States
Jaume Ojer, David Cárcamo, Romualdo Pastor-Satorras +1
Has ideological polarization actually increased in the last decades, or have voters simply sorted themselves into parties matching their ideology more closely? We present a novel m…