α′ corrections of Reissner-Nordström black holes
Entity
UAM. Departamento de Física TeóricaPublisher
SpringerDate
2020-02-04Citation
10.1007/JHEP02(2020)031
Journal of High Energy Physics 2020.2 (2020): 31
ISSN
1126-6708 (print); 1029-8479 (online)DOI
10.1007/JHEP02(2020)031Funded by
This work has been supported in part by the MCIU, AEI, FEDER (UE) grant PGC2018- 095205-B-I00, CONACyT grant 237351 and by the Spanish Research Agency (Agencia Estatal de Investigación) through the grant IFT Centro de Excelencia Severo Ochoa SEV- 2016-0597. PAC was mostly funded by Fundación La Caixa through a La Caixa - Severo Ochoa" International pre-doctoral grant. In the last stages of this project PAC was supported by the KU Leuven grant \Bijzonder Onderzoeksfonds C16/16/005Project
Gobierno de España. PGC2018-095205-B-I00; Gobierno de España. SEV-2016-0597Editor's Version
https://dx.doi.org/10.1007/JHEP02(2020)031Subjects
Black holes in String Theory; Superstring Vacua; Superstrings and Heterotic Strings; FísicaRights
© 2020, The Author(s)Abstract
We study the first-order in α′ corrections to non-extremal 4-dimensional dyonic Reissner-Nordström (RN) black holes with equal electric and magnetic charges in the context of Heterotic Superstring effective field theory (HST) compactified on a T6. The particular embedding of the dyonic RN black hole in HST considered here is not supersymmetric in the extremal limit. We show that, at first order in α′, consistency with the equations of motion of the HST demands additional scalar and vector fields become active, and we provide explicit expressions for all of them. We determine analytically the position of the event horizon of the black hole, as well as the corrections to the extremality bound, to the temperature and to the entropy, checking that they are related by the first law of black-hole thermodynamics, so that ∂S/∂M = 1/T. We discuss the implications of our results in the context of the Weak Gravity Conjecture, clarifying that entropy corrections for fixed mass and charge at extremality do not necessarily imply corrections to the extremal charge-to-mass ratio
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Google Scholar:Cano, Pablo A.
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Chimento, Samuele
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Linares, Román
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Ortín, Tomás
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Ramírez, Pedro F.
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