A holographic model of the fractional quantum Hall effect

Abstract: I will describe a top-down holographic model of strongly-interacting fermions in 2+1 dimensions using D3 and D7 branes. The black hole embeddings of the D7-branes correspond to metallic states, while the Minkowski embedding represents a quantum Hall fluid at quantized fractional filling fraction. We have analyzed the fluctuations of both the metallic and quantum Hall states. In particular, we find in the metallic state an instability to an inhomogeneous, striped phase.