In holographic N=4 SYM isotropization, the late-time effective shear viscosity-to-entropy ratio depends on the quench and initial data and can fall parametrically below the KSS bound.
Quasinormal modes and thermalization in Improved Holographic QCD
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
Following a series of similar calculations in simpler non-conformal holographic setups, we determine the quasinormal mode spectrum for an operator dual to a gauge-invariant scalar field within the Improved Holographic QCD framework. At temperatures somewhat above the critical temperature of the deconfinement transition, we find a small number of clearly separated modes followed by a branch-cut-like structure parallel to the real axis, the presence of which is linked to the form of the IHQCD potential employed. The temperature dependence of the lowest nonzero mode is furthermore used to study the thermalization time of the corresponding correlator, which is found to be of the order of the inverse critical temperature near the phase transition and decrease slightly faster than $1/T$ at higher temperatures.
fields
hep-th 1years
2024 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Shear transport in far-from-equilibrium isotropization of supersymmetric Yang-Mills plasma
In holographic N=4 SYM isotropization, the late-time effective shear viscosity-to-entropy ratio depends on the quench and initial data and can fall parametrically below the KSS bound.