Special Session 69: Mathematical Models and Analysis of (Partial) Differential Equations in the Applied Sciences

Localization of Self-Similar Solutions in Diffusion-Relaxation Systems
Hoyoun Kim
King Abdullah University of Science and Technology (KAUST)
Korea
Co-Author(s):    
Abstract:
In this talk, we construct localizing solutions for diffusion-relaxation systems by exploiting their self-similar structure. Diffusion-relaxation models arise in a wide range of applications, from shear-induced motion to biological chemotaxis, and exhibit equilibration and localization depending on parameter regimes. We extend the self-similar formulation to multi-dimensional domains and analyze the resulting asymptotic behavior of solutions. Using geometric singular perturbation theory and the Poincar\'e-Bendixson lemma on a perturbed invariant manifold, we establish the existence of localized self-similar solutions.