Abstract
We study deformations of the Almheiri-Polchinski (AP) model by employing the Yang-Baxter deformation technique. The general deformed AdS2 metric becomes a solution of a deformed AP model. In particular, the dilaton potential is deformed from a simple quadratic form to a hyperbolic function-type potential similarly to integrable deformations. A specific solution is a deformed black hole solution. Because the deformation makes the spacetime structure around the boundary change drastically and a new naked singularity appears, the holographic interpretation is far from trivial. The Hawking temperature is the same as the undeformed case but the Bekenstein-Hawking entropy is modified due to the deformation. This entropy can also be reproduced by evaluating the renormalized stress tensor with an appropriate counter-term on the regularized screen close to the singularity.
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Kyono, H., Okumura, S. & Yoshida, K. Deformations of the Almheiri-Polchinski model. J. High Energ. Phys. 2017, 173 (2017). https://doi.org/10.1007/JHEP03(2017)173
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DOI: https://doi.org/10.1007/JHEP03(2017)173