Abstract
We discuss AdS2 quantum gravity from an unconventional perspective that emphasizes bulk geometry. In our approach, AdS2 has no boundary, there are no divergences that require renormalization, and the dilaton of JT-gravity can be omitted altogether. The result is the standard Schwarzian theory. However, it may be advantageous that our derivation just relies on conventional AdS/CFT correspondence and effective quantum field theory. For example, it clarifies the symmetry breaking pattern. It also puts the non-compact AdS2 topology on the same footing as compact Riemann surfaces.
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Acknowledgments
We thank participants in the Princeton University (PCTS) workshop on “Low Dimensional Holography and Black Holes” for comments and discussions in response to a version of this article presented by FL. FL thanks the Simons Foundation for support through a sabbatical fellowship. He also thanks Stanford Institute for Theoretical Physics for hospitality and support in the course of the sabbatical. The work of SC is supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 852386). SC also acknowledges financial support from the Samsung Scholarship. This work was supported in part by DoE grant DE-SC0007859.
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Choi, S., Larsen, F. AdS2 holography and effective QFT. J. High Energ. Phys. 2023, 151 (2023). https://doi.org/10.1007/JHEP11(2023)151
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DOI: https://doi.org/10.1007/JHEP11(2023)151