Transport coefficients of heavy quarks around $T_c$ at finite quark chemical potential

Understand

The interactions of heavy quarks with the partonic environment at finite temperature $T$ and finite quark chemical potential $\mu_q$ are investigated in terms of transport coefficients within the Dynamical Quasi-Particle model (DQPM) designed to reproduce the lattice-QCD results (including the partonic equation of state) in thermodynamic equilibrium.

• These results are confronted with those of nuclear many-body calculations close to the critical temperature $T_c$.
• The hadronic and partonic spatial diffusion coefficients join smoothly and show a pronounced minimum around $T_c$, at $\mu_q=0$ as well as at finite $\mu_q$.
• Close and above $T_c$ its absolute value matches the lQCD calculations for $\mu_q=0$.