https://doi.org/10.1140/epjc/s10052-018-6267-1
Regular Article - Theoretical Physics
Exact embeddings of JT gravity in strings and M-theory
1
Department of Physics, Tianjin University, Tianjin, 300350, China
2
School of Physics, Beijing Institute of Technology, Beijing, 100081, China
* e-mail: mrhonglu@gmail.com
Received:
3
August
2018
Accepted:
20
September
2018
Published online:
28
September
2018
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 
, 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.
© The Author(s), 2018
