Incoherent conductivity of holographic charge density waves

Understand

The DC resistivity of charge density waves weakly-pinned by disorder is controlled by diffusive, incoherent processes rather than slow momentum relaxation.

• The corresponding incoherent conductivity can be computed in the limit of zero disorder.
• We compute this transport coefficient in holographic spatially modulated breaking translations spontaneously.
• As a by-product of our analysis, we clarify how the boundary heat current is obtained from a conserved bulk current, defined as a suitable generalization of the Iyer-Wald Noether current of the appropriate Killing vector.