Holography of the Dirac Fluid in Graphene with two currents

Understand

Recent experiments have uncovered evidence of the strongly coupled nature of the graphene: the Wiedemann-Franz law is violated by up to a factor of 20 near the charge neutral point.

• We describe this strongly-coupled plasma by a holographic model in which there are two distinct conserved U(1) currents.
• We find that our analytic results for the transport coefficients for two current model have a significantly improved match to the density dependence of the experimental data than the models with only one current.
• The additive structure in the transports coefficients plays an important role.