Friction Coefficient for Quarks in Supergravity Duals
arXiv:hep-th/0611235
Abstract
We study quarks moving in strongly-coupled plasmas that have supergravity duals. We compute the friction coefficient of strings dual to such quarks for general static supergravity backgrounds near the horizon. Our results also show that a previous conjecture on the bound has to be modified and higher friction coefficients can be achieved.
9 pages, harvmac (b)