Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-05-16
Physics
High Energy Physics
High Energy Physics - Theory
19 pages, 2 figures, one error corrected
Scientific paper
We investigate several aspects of exact black hole solutions in asymptotically Lifshitz spacetime, which were proposed in 0812.0530. Firstly, we calculate the tidal forces and find that in the near horizon region of such black hole backgrounds, the tidal forces diverge in the near extremal limit. Secondly, we evaluate the Wilson loops in both extremal and finite temperature cases. Finally, we obtain the corresponding shear viscosity and square of the sound speed and find that the ratio of shear viscosity to entropy density takes the universal value $1/4\pi$ in arbitrary dimensions while the square of the speed of sound saturates the conjectured bound 1/3 in five dimensions.
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