Aggregation-diffusion equations: dynamics, asymptotics, and singular limits

JA Carrillo, K Craig, Y Yao - Active Particles, Volume 2: Advances in …, 2019 - Springer
Given a large ensemble of interacting particles, driven by nonlocal interactions and localized
repulsion, the mean-field limit leads to a class of nonlocal, nonlinear partial differential …

Primal dual methods for Wasserstein gradient flows

JA Carrillo, K Craig, L Wang, C Wei - Foundations of Computational …, 2022 - Springer
Combining the classical theory of optimal transport with modern operator splitting
techniques, we develop a new numerical method for nonlinear, nonlocal partial differential …

On the incompressible limit for a tumour growth model incorporating convective effects

N David, M Schmidtchen - Communications on Pure and …, 2024 - Wiley Online Library
In this work we study a tissue growth model with applications to tumour growth. The model is
based on that of Perthame, Quirós, and Vázquez proposed in 2014 but incorporates the …

From radial symmetry to fractal behavior of aggregation equilibria for repulsive–attractive potentials

JA Carrillo, R Shu - Calculus of Variations and Partial Differential …, 2023 - Springer
For the interaction energy with repulsive–attractive potentials, we give generic conditions
which guarantee the radial symmetry of the local minimizers in the infinite Wasserstein …

A blob method for inhomogeneous diffusion with applications to multi-agent control and sampling

K Craig, K Elamvazhuthi, M Haberland… - Mathematics of …, 2023 - ams.org
As a counterpoint to classical stochastic particle methods for linear diffusion equations, such
as Langevin dynamics for the Fokker-Planck equation, we develop a deterministic particle …

Incompressible limits of the Patlak-Keller-Segel model and its stationary state

Q He, HL Li, B Perthame - Acta Applicandae Mathematicae, 2023 - Springer
We complete previous results about the incompressible limit of both the n-dimensional (n≥
3) compressible Patlak-Keller-Segel (PKS) model and its stationary state. As in previous …

Nonlocal approximation of slow and fast diffusion

K Craig, M Jacobs, O Turanova - arXiv preprint arXiv:2312.11438, 2023 - arxiv.org
Motivated by recent work on approximation of diffusion equations by deterministic interacting
particle systems, we develop a nonlocal approximation for a range of linear and nonlinear …

Uniqueness and Nonuniqueness of Steady States of Aggregation‐Diffusion Equations

MG Delgadino, X Yan, Y Yao - Communications on Pure and …, 2022 - Wiley Online Library
We consider a nonlocal aggregation equation with degenerate diffusion, which describes
the mean‐field limit of interacting particles driven by nonlocal interactions and localized …

Deterministic particle approximation of aggregation-diffusion equations on unbounded domains

S Daneri, E Radici, E Runa - Journal of Differential Equations, 2022 - Elsevier
We consider a one-dimensional aggregation-diffusion equation, which is the gradient flow in
the Wasserstein space of a functional with competing attractive-repulsive interactions. We …

Aggregation-diffusion phenomena: from microscopic models to free boundary problems

I Kim, A Mellet, J Sheung-Him Wu - Active Particles, Volume 4, 2024 - Springer
This chapter reviews (and expands) some recent results on the modeling of aggregation-
diffusion phenomena at various scales, focusing on the emergence of collective dynamics …