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http://hdl.handle.net/10773/31542
Title: | De-singularizing the extremal GMGHS black hole via higher derivatives corrections |
Author: | Herdeiro, Carlos Radu, Eugen Uzawa, Kunihito |
Issue Date: | 10-Jul-2021 |
Publisher: | Elsevier |
Abstract: | The Gibbons-Maeda-Garfinkle-Horowitz-Strominger (GMGHS) black hole is an influential solution of the low energy heterotic string theory. As it is well known, it presents a singular extremal limit. We construct a regular extension of the GMGHS extremal black hole in a model with $\mathcal{O}(\alpha')$ corrections in the action, by solving the fully non-linear equations of motion. The de-singularization is supported by the $\mathcal{O}(\alpha')$-terms. The regularised extremal GMGHS BHs are asymptotically flat, possess a regular (non-zero size) horizon of spherical topology, with an $AdS_2\times S^2$ near horizon geometry, and their entropy is proportional to the electric charge. The near horizon solution is obtained analytically and some illustrative bulk solutions are constructed numerically. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/31542 |
DOI: | 10.1016/j.physletb.2021.136357 |
ISSN: | 0370-2693 |
Appears in Collections: | CIDMA - Artigos DMat - Artigos GGDG - Artigos |
Files in This Item:
File | Description | Size | Format | |
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PLB818(2021)136357.pdf | 401.17 kB | Adobe PDF | View/Open |
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