“Normal Diffusion of Tracer Particle in Single-File Diffusion with Spatially Varying Potential and Diffusivity at Late Times”

https://pubmed.ncbi.nlm.nih.gov/38115401

The dispersion of a tracer particle in single-file diffusion with spatially varying potential and diffusivity exhibits normal diffusion at late times, with the same long-time behavior as Brownian particles in a spatially homogeneous system.