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Paper IPM / P / 14680  


Abstract:  
Using the gauge/gravity duality, we investigate the evolution of a stronglycoupled plasma
which is initially anisotropic and/or nonconformal, from the viewpoint of the twopoint function
of scalar gaugeinvariant operators with large conformal dimension. Considering various functions
for the initial anisotropy and scalar field, we conclude that the effect of the anisotropy on the
evolution of the twopoint function is considerably more than the effect of the scalar field. We also
show that the ordering of the equilibration time of the equilibration time of onepoint function
of the scalar field and the correlation function between two points with a fixed separation can be
reversed by changing the initial configuration of the plasma, when there are at least two sources
for driving the system out of the equilibrium. In addition, we find the equilibration time of the
twopoint function to be linearly increasing with respect to the separation of the two points with a
fixed slope, regardless of the initial configuration that we start with. Finally we observe that, for
larger separations the geodesic connecting two points on the boundary crosses the event horizon
after it has reached its final equilibrium value, meaning that the twopoint function can probe
behind the event horizon.
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