Strange metal transport from pinned charge density waves

In this talk, I will describe the effects of weak disorder on the hydrodynamics of incommensurate charge density waves, focusing on transport properties. Using gauge-gravity duality allows to uncover a universal relation between the pinning frequency of the phason and its decay rate. I will comment on possible connections to transport in the strange metallic phase of cuprate high Tc superconductors, where charge density fluctuations may play an important role. This talk is based on Amoretti et al, Phys. Rev. Lett. 123, 211602 (2019), and Delacrétaz et al, SciPost Phys. 3, 025 (2017) and Phys. Rev. B 96, 195128 (2017) .