For the quadratic-dilaton Einstein-dilaton holographic model, the vector-sector dispersion relation gives η/s = 1/(4π), and the Kubo-formula bulk viscosity matches JETSCAPE data within a fitted range of the dilaton parameter c.
(17) This is the Hawking temperature, which depends on zh, and is interpreted as the temperature of the dual field theory, in this case, a non-conformal theory
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Transport coefficients and quasinormal modes in Einstein-dilaton holographic QCD
For the quadratic-dilaton Einstein-dilaton holographic model, the vector-sector dispersion relation gives η/s = 1/(4π), and the Kubo-formula bulk viscosity matches JETSCAPE data within a fitted range of the dilaton parameter c.