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Published January 2023 | Published
Journal Article Open

AdS/BCFT from conformal bootstrap: construction of gravity with branes and particles


We initiate a conformal bootstrap program to study AdS₃/BCFT₂ with heavy excitations. We start by solving the bootstrap equations associated with two-point functions of scalar/non-scalar primaries under the assumption that one-point functions vanish. These correspond to gravity with a brane and a non-spinning/spinning particle where the brane and the particle do not intersect with each other. From the bootstrap equations, we obtain the energy spectrum and the modified black hole threshold. We then carefully analyze the gravity duals and find the results perfectly match the BCFT analysis. In particular, brane self-intersections, which are usually considered to be problematic, are nicely avoided by the black hole formation. Despite the assumption to solve the bootstrap equations, one-point functions of scalar primaries can be non-zero in general. We construct the holographic dual for a non-vanishing one-point function, in which the heavy particle can end on the brane, by holographically computing the Rényi entropy in AdS/BCFT. As a bonus, we find a refined formula for the holographic Rényi entropy, which appears to be crucial to correctly reproduce the boundary entropy term. On the other hand, we explain why one-point functions of non-scalar primaries always vanish from the gravity dual. The non-sensitivity of the solution for the bootstrap equation to the boundary entropy helps us to construct gravity duals with negative tension branes. We also find a holographic dual of boundary primaries.

Additional Information

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. We are grateful to Nathan Benjamin, Cyuan-Han Chang, Scott Collier, Xi Dong, Hao Geng, Andreas Karch, Marco Meineri, Takato Mori, Hidetoshi Omiya, Sridip Pal, Shan-Ming Ruan, David Simmons-Duffin, Tadashi Takayanagi, Maria Tikhanovskaya, Zhencheng Wang, Masataka Watanabe and Ying Zhao for useful discussions. YK is supported by the Brinson Prize Fellowship at Caltech and the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under Award Number DE-SC0011632. ZW is supported by Grant-in-Aid for JSPS Fellows No. 20J23116, in part by the National Science Foundation under Grant No. NSF PHY-1748958 and by the Heising-Simons Foundation.

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Published - JHEP01_2023_108.pdf


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August 22, 2023
August 22, 2023