Abstract
We employ double holography to examine a system of two entangled gravitating universes that live on two codimension-one branes in an asymptotically AdS3 spacetime with two disjoint conformal boundaries. There are distinct brane configurations depending on the temperature of the thermofield double (TFD) state between the left and right systems. The topology transition between two branes is naturally identified with the emergence of an Einstein-Rosen bridge connecting the two entangled universes. This doubly holographic construction offers a holographic perspective on gravitational collapse and black hole formation in brane universes. Through this holographic framework, we analyze the quantum information structure of the two gravitating universes. Specifically, we calculate the mutual information between defects present in the boundary theories on the left and right sides. Furthermore, we investigate the decoupling process in the Hayden-Preskill protocol applied to the two copies of the defect field theory and discuss the interpretation of the Yoshida-Kitaev decoding protocol.
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Acknowledgments
We are happy to thank Dongsheng Ge, Jonathan Harper, Yan Liu, Akihiro Miyata, Takato Mori, Tadashi Takayanagi and Zhencheng Wang for useful discussions. We would also like to thank the organizers and participants of the Qubits on the Horizon 2 meeting (April 4-8, 2022) for providing the stimulating environment where this collaboration began. Research at Perimeter Institute is supported in part by the Government of Canada through the Department of Innovation, Science and Economic Development Canada and by the Province of Ontario through the Ministry of Colleges and Universities. RCM is supported in part by a Discovery Grant from the Natural Sciences and Engineering Research Council of Canada, and by funding from the BMO Financial Group. RCM and SMR were supported by the Simons Foundation through the “It from Qubit” collaboration. SMR and TU are also supported by MEXT-JSPS Grant-in-Aid for Transformative Research Areas (A) “Extreme Universe”, No. 21H05187. SMR is also supported by JSPS KAKENHI Research Activity Start-up Grant Number JP22K20370.
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Myers, R.C., Ruan, SM. & Ugajin, T. Double holography of entangled universes. J. High Energ. Phys. 2024, 35 (2024). https://doi.org/10.1007/JHEP07(2024)035
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DOI: https://doi.org/10.1007/JHEP07(2024)035