Description
Recent studies of the fluctuations of an open string in AdS space show
some pieces of evidence that the string with a worldsheet horizon
could be a dual description of SYK model, as they saturate universal
chaos bound and share the same symmetry. An open string hangs from the
AdS boundary to the horizon of black brane could be dual to a 0+1
dimensional boundary state. To be specific, we find that the
fluctuation of the string in charged BTZ black hole has an asymptotic
scaling symmetry, and its Euclidean IR fixed point is governed by the
quadratic order of Schwarzian action, which is just the low energy
effective theory of the SYK model. Considering the open string
worldsheet also has natural reparametrization symmetry, we conjecture
that the action of the string worldsheet is an effective dual
description of SYK model.
