Hall Conductivity of Flavor Fields from AdS/CFT

Understand

We use the AdS/CFT correspondence to compute a conductivity associated with massive N=2 supersymmetric hypermultiplet fields at finite baryon density, propagating through an N=4 supersymmetric SU(Nc) Yang-Mills plasma in the large Nc, large 't Hooft coupling limit.

• We do so by introducing external electric and magnetic fields coupled to baryon number and computing the resulting induced current, from which we extract the conductivity tensor.
• At large hypermultiplet mass we compute the drag force on the charge carriers.
• We also compute the product of the drag coefficient with the kinetic mass, and find that the answer is unchanged from the zero density case.