Supercritical Mass and Condensation in Fokker--Planck Equations for Consensus Formation

Fuente: arXiv
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Main Authors: Caloi, Monica, Zanella, Mattia
Format: Preprint
Published: 2026
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author Caloi, Monica
Zanella, Mattia
author_facet Caloi, Monica
Zanella, Mattia
contents Inspired by recently developed Fokker--Planck models for Bose--Einstein statistics, we study a consensus formation model with condensation effects driven by a polynomial diffusion coefficient vanishing at the domain boundaries. For the underlying kinetic model, given by a nonlinear Fokker--Planck equation with superlinear drift, it was shown that if the initial mass exceeds a critical threshold, the solution may exhibit finite-time concentration in certain parameter regimes. Here, we show that this supercritical mass phenomenon persists for a broader class of diffusion functions and provide estimates of the critical mass required to induce finite-time loss of regularity.
format Preprint
id arxiv_https___arxiv_org_abs_2602_13276
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Supercritical Mass and Condensation in Fokker--Planck Equations for Consensus Formation
Caloi, Monica
Zanella, Mattia
Analysis of PDEs
Multiagent Systems
Adaptation and Self-Organizing Systems
Inspired by recently developed Fokker--Planck models for Bose--Einstein statistics, we study a consensus formation model with condensation effects driven by a polynomial diffusion coefficient vanishing at the domain boundaries. For the underlying kinetic model, given by a nonlinear Fokker--Planck equation with superlinear drift, it was shown that if the initial mass exceeds a critical threshold, the solution may exhibit finite-time concentration in certain parameter regimes. Here, we show that this supercritical mass phenomenon persists for a broader class of diffusion functions and provide estimates of the critical mass required to induce finite-time loss of regularity.
title Supercritical Mass and Condensation in Fokker--Planck Equations for Consensus Formation
topic Analysis of PDEs
Multiagent Systems
Adaptation and Self-Organizing Systems
url https://arxiv.org/abs/2602.13276