Universal conductivity and central charges
High Energy Physics - Theory
2010-05-12 v2 Strongly Correlated Electrons
Abstract
We discuss a class of critical models in d>1+1 dimensions whose electrical conductivity and charge susceptibility are fixed by the central charge in a universal manner. We comment on possible bounds on conductivity, as suggested by holographic duality.
Cite
@article{arxiv.0806.0110,
title = {Universal conductivity and central charges},
author = {Pavel Kovtun and Adam Ritz},
journal= {arXiv preprint arXiv:0806.0110},
year = {2010}
}
Comments
10 pages; v2: reference added, to appear in Phys. Rev. D