Shear viscosity from Gauss-Bonnet gravity with a dilaton coupling
By R. Cai, Zhang-Yu Nie, N. Ohta, Ya-Wen Sun. 2009
146 citations recorded by the source corpus.
We calculate the shear viscosity of field theories with gravity duals of Gauss-Bonnet gravity with a nontrivial dilaton using anti-de Sitter/conformal field theory. We find that the dilaton field has a nontrivial contribution to the ratio of shear viscosity over entropy density, and, after imposing a causal constraint for the boundary field theory, the new lower bound 4/25 pi, obtained from pure Gauss-Bonnet gravity, may have a small violation.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/f057bbe748d370306511077129be45e40f1c1341
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Astronomy and Astrophysics
In Nuclear and High Energy Physics
Citations in the corpus
- Holographic Hydrodynamics with a Chemical Potential (2009, methodology): “The work was also extended in [43] to include a dilaton coupling to the Gauss-Bonnet term.”
- Comments on holographic entanglement entropy and RG flows (2012, background): “In part, this motivated the recent holographic studies of GaussBonnet (GB) gravity [54, 55] — for example, see [56–64].”
- AdS7/CFT6, Gauss-Bonnet gravity, and viscosity bound (2009, background): “Other recent work on the higher derivative corrections to η/s includes [10-23].”
- Holographic GB gravity in arbitrary dimensions (2009, methodology): “In particular, the results of [30–32] indicate that a similar well develops in the scalar channel of GB gravity for general D, e.”
- Analytical study on holographic superconductors in external magnetic field (2010, background): “There is an upper positive bound for the Gauss-Bonnet coupling and beyond which the tensor type perturbation at the boundary would propagate at a superluminal velocity and the boundary theory would then become pathologic [44–54].”
- Holographic studies of quasi-topological gravity (2010, methodology): “These causality constraints have since been extended to GB gravity in higher dimensions [17, 16, 18] and more generally to higher order Lovelock theories [21].”