3 papers
physics.soc-ph2026
Loops, not groups: Long cycles are responsible for discontinuous phase transitions in higher-order network contagions
Leah A. Keating, Laurent Hébert-Dufresne
We study a self-consistent approach to introduce higher-order effects in a branching process model of complex contagion on clustered networks. Branching processes operate over an i…
physics.soc-ph2026
An Approximate-Master-Equation Formulation of the Watts Threshold Model on Hypergraphs
Leah A. Keating, Kwang-Il Goh, Mason A. Porter
In traditional models of behavioral or opinion dynamics on social networks, researchers suppose that all interactions occur between pairs of individuals. However, in reality, socia…
physics.soc-ph2026
Group dynamics shape contagion onsets and multistable active phases under collective reinforcement
Santiago Lamata-OtÃn, Federico Malizia, Leah A. Keating +4
Group-based reinforcement can induce discontinuous transitions from inactive to active phases in higher-order contagion models. However, these results are typically obtained on sta…