In this paper, we propose a new model of chemotaxis motivated by ant trail pattern formation, formulated as a coupled parabolic-parabolic local PDE system, for the population density and the chemical field. The main novelty lies in the transport term of the population density, which depends on the second-order derivatives of the chemical field. This term is derived as an anticipation-reaction steering mechanism of an infinitesimally small ant as its size approaches zero. We establish global-in-time existence and uniqueness for the model, and the propagation of regularity from the initial data. Then, we build a numerical scheme and present various examples that provide hints of trail formation.
@article{arxiv.2408.13363,
title = {Curvature in chemotaxis: A model for ant trail pattern formation},
author = {Charles Bertucci and Matthias Rakotomalala and Milica Tomasevic},
journal= {arXiv preprint arXiv:2408.13363},
year = {2024}
}