Conductivity at finite 't Hooft coupling from AdS/CFT

We use the AdS/CFT correspondence to study the DC conductivity of massive $\mathcal{N}=2$ hypermultiplet fields in an $\mathcal{N}=4SU(N_c)$ super-Yang-Mills theory plasma in the large $N_c$ and finite 't Hooft coupling. We also discuss general curvature-squared and Gauss-Bonnet corrections on the DC conductivity.