Holographic sliding stripes
Abstract
Holographic models provide unique laboratories to investigate non-linear physics of transport in inhomogeneous systems. We provide a detailed account of both DC and AC conductivities in a defect CFT with spontaneous stripe order. The spatial symmetry is broken at large chemical potential and the resulting ground state is a combination of a spin and charge density wave. An infinitesimal applied electric field across the stripes will cause the stripes to slide over the underlying density of smeared impurities, a phenomenon which can be associated with the Goldstone mode for the spontaneously broken translation symmetry. We show that the presence of a spatially modulated background magnetization current thwarts the expression of some DC conductivities in terms of horizon data.
Cite
@article{arxiv.1612.07323,
title = {Holographic sliding stripes},
author = {Niko Jokela and Matti Jarvinen and Matthew Lippert},
journal= {arXiv preprint arXiv:1612.07323},
year = {2017}
}
Comments
37 pages, 8 figures; v2: minor clarifications, published version