PreprintCC BY 4.0arXiv
Logarithmic corrections to the entropy of near-extremal black holes in New Massive Gravity
Abstract
We study the one-loop correction to the entropy of near-extremal black holes in three-dimensional massive gravity at the special point where the theory exhibits a unique maximally symmetric vacuum and non-constant curvature hairy black holes can achieve extremality even in the static case. Focusing on the near-horizon AdS2× S1 geometry, we evaluate the contribution of boundary graviton modes that become exact zero modes in the extremal limit. We show that the resulting one-loop partition function generates logarithmic corrections to the semiclassical entropy, providing a new extension to higher-curvature gravity of what has been recently obtained for near-extremal black holes in General Relativity.
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BibTeX
@misc{acito2026logarithmic,
title = {{Logarithmic corrections to the entropy of near-extremal black holes in New Massive Gravity}},
author = {Lucas Acito and Mariano Chernicoff and Julio Oliva and Cielo Ramirez de Arellano Torres and Matías Sempe},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2606.13546},
eprint = {2606.13546},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.13546},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Logarithmic corrections to the entropy of near-extremal black holes in New Massive Gravity
AU - Lucas Acito
AU - Mariano Chernicoff
AU - Julio Oliva
AU - Cielo Ramirez de Arellano Torres
AU - Matías Sempe
PY - 2026
DA - 2026/10/23
PB - arXiv
DO - 10.48550/arxiv.2606.13546
UR - https://arxiv.org/abs/2606.13546
AB - We study the one-loop correction to the entropy of near-extremal black holes in three-dimensional massive gravity at the special point where the theory exhibits a unique maximally symmetric vacuum and non-constant curvature hairy black holes can achieve extremality even in the static case. Focusing on the near-horizon AdS_2× S^1 geometry, we evaluate the contribution of boundary graviton modes that become exact zero modes in the extremal limit. We show that the resulting one-loop partition function generates logarithmic corrections to the semiclassical entropy, providing a new extension to higher-curvature gravity of what has been recently obtained for near-extremal black holes in General Relativity.
ER -