Diffusion wave phenomena and optimal time decay for incompressible viscoelastic flows

This article likely presents research on the mathematical properties of viscoelastic fluids. The title suggests an investigation into how disturbances (waves) propagate within these fluids and how their effects diminish over time (decay). The terms 'incompressible' and 'optimal' indicate specific constraints and goals of the study, likely aiming to establish theoretical bounds or understand the behavior of these flows under certain conditions.