Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-11-23
JHEP 1003:111,2010
Physics
High Energy Physics
High Energy Physics - Theory
48 pages, 9 figures. v2: New discussion on free fields in subsection 3.3 and new appendix B on conformal tensor fields. Added
Scientific paper
10.1007/JHEP03(2010)111
We study the properties of the holographic CFT dual to Gauss-Bonnet gravity in general $D \ge 5$ dimensions. We establish the AdS/CFT dictionary and in particular relate the couplings of the gravitational theory to the universal couplings arising in correlators of the stress tensor of the dual CFT. This allows us to examine constraints on the gravitational couplings by demanding consistency of the CFT. In particular, one can demand positive energy fluxes in scattering processes or the causal propagation of fluctuations. We also examine the holographic hydrodynamics, commenting on the shear viscosity as well as the relaxation time. The latter allows us to consider causality constraints arising from the second-order truncated theory of hydrodynamics.
Buchel Alex
Escobedo Jorge
Myers Robert C.
Paulos Miguel F.
Sinha Aninda
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