Work

Shear viscosity and Chern–Simons diffusion rate from hyperbolic horizons

Year: 2009

Type: article

Abstract: We calculate the shear viscosity and anomalous baryon number violation rate in quantum field theories at finite temperature having gravity duals with hyperbolic horizons. We find the explicit dependence of these quantities on the temperature. We show that the ratio of shear viscosity to entropy density is below 1/(4π) at all temperatures and can be made arbitrarily small in the low temperature limit for hyperbolic surfaces of sufficiently high genus so that the hydrodynamic limit remains valid.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2009.05.010

Authors: George Koutsoumbas, Eleftherios Papantonopoulos, George Siopsis

Institutions: National Technical University of Athens, University of Tennessee at Knoxville

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid:

Funders: U.S. Department of Energy, National Technical University of Athens