Viscosity to entropy ratio at extremality

• DOI: 10.1007/jhep01(2010)068
• Publication Date: 2010-01-18T13:54:39Z
• Authors: Sayan K. Chakrabarti; Sachin Jain; Sudipta Mukherji
• Keywords: High Energy Physics - Theory; High Energy Physics - Theory (hep-th); 0103 physical sciences; FOS: Physical sciences; 01 natural sciences

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.<br/>7 pages, some typos corrected, conclusion added, journal version<br/>