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arXiv · 1804.09742

Exact Embeddings of JT Gravity in Strings and M-theory

Yue-Zhou Li·Shou-Long Li·H. Lu
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Abstract

We show that two-dimensional JT gravity, the holographic dual of the IR fixed point of the SYK model, can be obtained from the consistent Kaluza-Klein reduction of a class of EMD theories in general $D$ dimensions. For $D=4$, $5$, the EMD theories can be themselves embedded in supergravities. These exact embeddings provide the holographic duals in the framework of strings and M-theory. We find that a class of JT gravity solutions can be lifted to become time-dependent charged extremal black holes. They can be further lifted, for example, to describe the D1/D5-branes where the worldsheet is the Milne universe, rather than the typical Minkowski spacetime.

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Yue-Zhou Li, Shou-Long Li, H. Lu. 2018-10-03. Exact Embeddings of JT Gravity in Strings and M-theory. https://doi.org/10.1140/epjc%2Fs10052-018-6267-1

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