Holographic Brownian motion and time scales in strongly coupled plasmas

Bulk viscosity of strongly coupled plasmas with holographic duals

We explain a method for computing the bulk viscosity of strongly coupled thermal plasmas dual to supergravity backgrounds supported by one scalar field. Whereas earlier investigations required the computation of the leading dissipative term in the dispersion relation for sound waves, our method requires only the leading frequency dependence of an appropriate Green’s function in the low-frequenc...

Brownian motion at short time scales

Brownian Motion at Fast Time Scales and Thermal Noise Imaging

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Formation of correlations in strongly coupled plasmas

The formation of binary correlations in plasma is studied from the quantum kinetic equation. It is shown that this formation is much faster than dissipation due to collisions. In a hot (dense) plasma the correlations are formed on the scale of inverse plasma frequency (Fermi energy). We derive analytical formulae for the time dependency of the potential energy which measures the extent of corre...

Spatial correlators in strongly coupled plasmas

We numerically calculate the spatial correlators of the scalar and pseudoscalar operators F 2 and FF̃ , in SU(3) Yang-Mills theory at zero and finite-temperature on the lattice. We compare the results over the distances 1 2T < r < 3 2T to the free-field prediction, to the operator-product expansion as well as to the strongly coupled large-Nc N = 4 superYang-Mills theory, where results are obtain...