  By using gravity/gauge correspondence, we construct a holographic model,
constrained to mimic the lattice QCD equation of state at zero density, to
investigate the temperature and baryon chemical potential dependence of the
equation of state. We also obtained the energy loss of light and heavy partons
within the hot and dense plasma represented by the heavy quark drag force,
Langevin diffusion coefficients and jet quenching parameter at the critical
point and across the first-order transition line predicted by the model.
