2014

Non-equilibrium scalar two point functions in AdS/CFT

Keranen, Ville, Kleinert, Philipp

Understand

In the first part of the paper, we discuss different versions of the AdS/CFT dictionary out of equilibrium.

  • We show that the Skenderis - van Rees prescription and the "extrapolate" dictionary are equivalent at the level of "in-in" two point functions of free scalar fields in arbitrary asymptotically AdS spacetimes.
  • In the second part of the paper, we calculate two point correlation functions in dynamical spacetimes using the "extrapolate" dictionary.
  • These calculations are performed for conformally coupled scalar fields in examples of spacetimes undergoing gravitational collapse, the AdS$_2$-Vaidya spacetime and the AdS$_3$-Vaidya spacetime, which allow us to address the problem of thermalization following a quench in the boundary field theory.

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