Origin of the Drude peak and of zero sound in probe brane holography
arXiv:1709.01520 · doi:10.1016/j.physletb.2017.10.023
Abstract
At zero temperature, the charge current operator appears to be conserved, within linear response, in certain holographic probe brane models of strange metals. At small but finite temperature, we analytically show that the weak non-conservation of this current leads to both a collective "zero sound" mode and a Drude peak in the electrical conductivity. This simultaneously resolves two outstanding puzzles about probe brane theories. The nonlinear dynamics of the current operator itself appears qualitatively different.
11 pages
References in corpus (10)
- Nonlinear Fluid Dynamics from Gravity
- Metallic AdS/CFT
- Momentum dissipation and effective theories of coherent and incoherent transport
- Memory matrix theory of magnetotransport in strange metals
- Zero Sound from Holography
- Holographic Responses of Fermion Matter
- Conductivity of a strange metal: from holography to memory functions
- Comments on Fermi Liquid from Holography
- The Stress-Energy Tensor of Flavor Fields from AdS/CFT
- Zero Sound in Strange Metallic Holography