In holographic models with a good-singularity ground state, a boost-invariant expanding fluid drives the dual horizon curvature to diverge in classical gravity.
Constructing Lifshitz solutions from AdS
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abstract
Under general assumptions, we show that a gravitational theory in d+1 dimensions admitting an AdS solution can be reduced to a d-dimensional theory containing a Lifshitz solution with dynamical exponent z=2. Working in a d=4, N=2 supergravity setup, we prove that if the AdS background is N=2 supersymmetric, then the Lifshitz geometry preserves 1/4 of the supercharges, and we construct the corresponding Killing spinors. We illustrate these results in examples from supersymmetric consistent truncations of type IIB supergravity, enhancing the class of known 4-dimensional Lifshitz solutions of string theory. As a byproduct, we find a new AdS4 x S1 x T(1,1) solution of type IIB.
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Cosmic censorship in a (dual) collider
In holographic models with a good-singularity ground state, a boost-invariant expanding fluid drives the dual horizon curvature to diverge in classical gravity.