Jackiw-Teitelboim Gravity from the Karch-Randall Braneworld

Authors :: Hao Geng
Andreas Karch
Carlos Perez-Pardavila
Suvrat Raju
Lisa Randall
Marcos Riojas
Sanjit Shashi
Source :: Physical Review Letters
Publication Year :: 2022
Publisher :: American Physical Society (APS), 2022.
Abstract: In this letter, we show that Jackiw-Teitelboim (JT) gravity can be naturally realized in the Karch-Randall braneworld. Notably the role of the dilaton in JT gravity is played by the radion in a suitably orbifolded version of the setup. In the classical entanglement entropy calculation, there is an apparent degeneracy of Ryu-Takayanagi surfaces. We demonstrate how quantum fluctuations of the radion/dilaton resolves this would-be classical puzzle regarding entanglement wedge reconstruction.<br />Comment: 5 Pages, 4 figures, comments are welcome