The holographic Weyl semi-metal

Understand

We present a holographic model of a Weyl semi-metal.

• We show that upon varying a mass parameter the model undergoes a quantum phase transition from a topologically non-trivial state to a trivial one.
• The order parameter for this phase transition is the anomalous Hall effect (AHE).
• We give an interpretation of the results in terms of a holographic RG flow and compare to a weakly coupled field theoretical model.