Evolution of Two-Point Functions from Holography

Understand

We consider a thermalization process in a 2-dimensional CFT that has a holographic description in terms of the gravitational collapse of a thin shell of null dust.

• This model represents a sudden perturbation of the CFT vacuum that communicates a uniform energy density to the system.
• We study the evolution of two-point functions at spacelike separated points (t1,l) and (t2,0), and reproduce the generic pattern first derived from the analysis of quantum quenches to critical systems.
• A crucial characteristic of these setups is that the excitations generated by the initial perturbation presents non-trivial quantum correlations.