QCD Critical Point and Hydrodynamic Evolution

Is there any critical behavior in heavy quark dynamics?

Jun 3, 2026, 2:30 PM

30m

Masukawa Hall (Yukawa Institute for Theoretical Physics)

Contributed

Speaker

Yukinao Akamatsu (National Institute of Technology, Matsue College)

Description

We study how heavy quark dynamics are affected by critical fluctuations near the QCD critical point at finite temperature and density. The momentum diffusion constant scales as $\kappa \propto \xi^{z-3-\eta}$, and we also examine the enhancement of the heavy quark spectral width near criticality. In Model H, the critical enhancement of $\kappa$ is negligible, while in Model B ($z \simeq 4$) it becomes singular, $\kappa \propto \xi$. These results demonstrate the sensitivity of heavy quark transport to the dynamical universality class near the QCD critical point.