Drag force near the QCD critical point

We discuss how heavy quark dynamics is affected by the critical fluctuations near the QCD critical point at finite temperature and density. We find that the heavy quark momentum diffusion constant scales as kappa oc xi z-3-eta. In the model H scenario, which is widely accepted for critical dynamics, the exponents are known as z <^> 3 and eta ti 0.04 and the critical singularity of kappa is not significant if present. In the model B scenario, z <^> 4 and kappa oc xi is singular near the critical point.