Hydrodynamic limits of non-Markovian interacting particle systems on sparse graphs

A Ganguly, K Ramanan - Electronic Journal of Probability, 2024 - projecteuclid.org
Consider an interacting particle system indexed by the vertices of a (possibly random)
locally finite graph whose vertices and edges are equipped with weights or marks that …

Interacting stochastic processes on sparse random graphs

K Ramanan - arxiv preprint arxiv:2401.00082, 2023 - arxiv.org
Large ensembles of stochastically evolving interacting particles describe phenomena in
diverse fields including statistical physics, neuroscience, biology, and engineering. In such …

[HTML][HTML] The contact process on a graph adapting to the infection

J Fernley, P Mörters, M Ortgiese - Stochastic Processes and their …, 2025 - Elsevier
We find a non-trivial phase transition for the contact process, a simple model for infection
without immunity, on a network which reacts dynamically to prevent an epidemic. This …

The irrelevance of influencers: Information diffusion with re-activation and immunity lasts exponentially long on social network models

T Friedrich, A Göbel, N Klodt, MS Krejca… - Proceedings of the AAAI …, 2024 - ojs.aaai.org
Information diffusion models on networks are at the forefront of AI research. The dynamics of
such models typically follow stochastic models from epidemiology, used to model not only …

Optimal bound for survival time of the SIRS process on star graphs

P Lam, O Nguyen, I Yang - arxiv preprint arxiv:2412.21138, 2024 - arxiv.org
We analyze the Susceptible-Infected-Recovered-Susceptible (SIRS) process, a continuous-
time Markov chain frequently employed in epidemiology to model the spread of infections on …

Subcritical epidemics on random graphs

O Nguyen, A Sly - Advances in Mathematics, 2025 - Elsevier
We study the contact process on random graphs with low infection rate λ. For random d-
regular graphs, it is known that the survival time is O (log⁡ n) below the critical λ c. By …

Understanding the impact of non-linearity in the SIS model

T Friedrich, A Göbel, N Klodt, MS Krejca… - Physica A: Statistical …, 2024 - Elsevier
The SIS model is a classic model from epidemiology that formalizes a variety of diffusion
processes on networks, such as biological infections and information dissemination. In this …

From Market Saturation to Social Reinforcement: Understanding the Impact of Non-Linearity in Information Diffusion Models

T Friedrich, A Göbel, N Klodt, MS Krejca… - arxiv preprint arxiv …, 2024 - arxiv.org
Diffusion of information in networks is at the core of many problems in AI. Common
examples include the spread of ideas and rumors as well as marketing campaigns …

Analysis of the survival time of the SIRS process via expansion

T Friedrich, A Göbel, N Klodt, MS Krejca… - Electronic Journal of …, 2024 - projecteuclid.org
We study the SIRS process—a continuous-time Markov chain modeling the spread of
infections on graphs. In this model, vertices are either susceptible, infected, or recovered …

Phase transitions for contact processes on one-dimensional networks

B Jahnel, L Lüchtrath, C Mönch - arxiv preprint arxiv:2501.16858, 2025 - arxiv.org
We study the survival/extinction phase transition for contact processes with quenched
disorder. The disorder is given by a locally finite random graph with vertices indexed by the …