English

Viscosity to entropy ratio at extremality

High Energy Physics - Theory 2010-03-12 v3

Abstract

Assuming gauge theory realization at the boundary, we show that the viscosity to entropy ratio is 1/(4 pi) where the bulk is represented by a large class of extremal black holes in anti-de Sitter space. In particular, this class includes multiple R-charged black holes in various dimensions.

Keywords

Cite

@article{arxiv.0910.5132,
  title  = {Viscosity to entropy ratio at extremality},
  author = {Sayan K. Chakrabarti and Sachin Jain and Sudipta Mukherji},
  journal= {arXiv preprint arXiv:0910.5132},
  year   = {2010}
}

Comments

7 pages, some typos corrected, conclusion added, journal version

R2 v1 2026-06-21T14:03:51.526Z