TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.15.3.083
TI  - Near-extremal limits of warped black holes
PY  - 2023/09/07
UR  - https://www.scipost.org/SciPostPhys.15.3.083
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 15
IS  - 3
SP  - 083
A1  - Aggarwal, Ankit
AU  - Castro, Alejandra
AU  - Detournay, Stéphane
AU  - Mühlmann, Beatrix
AB  - A holographic description of three-dimensional warped black holes suffers from ambiguities due to a seemingly harmless choice of coordinate system. This gives rise to the notion of ensembles in warped black holes, and we focus on two of them: the canonical and quadratic ensemble. Our aim is to quantify the imprint of these ensembles in the near-extremal limit of a warped black hole. To this end, for each ensemble, we explore the thermodynamic response and evaluate greybody factors. We also set-up a holographic dictionary in their near-AdS$_2$ region, and decode aspects of the dual near-CFT$_1$. This gives us different perspectives of the black hole that we can contrast and compare. On the one hand, we find perfect agreement between the near-extremal limit of the canonical ensemble warped black holes, their near-AdS$_2$ effective analysis, and a warped conformal field theory description. On the other, we are led to rule out the quadratic ensemble due to inconsistencies at the quantum level with the near-AdS$_2$ effective description.
ER  -

@Article{10.21468/SciPostPhys.15.3.083,
	title={{Near-extremal limits of warped black holes}},
	author={Ankit Aggarwal and Alejandra Castro and Stéphane Detournay and Beatrix Mühlmann},
	journal={SciPost Phys.},
	volume={15},
	pages={083},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.15.3.083},
	url={https://scipost.org/10.21468/SciPostPhys.15.3.083},
}