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Extremal stringy black holes in equilibrium at first order in $\alpha'$

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arxiv 2112.12764 v2 pith:EXH5U5LO submitted 2021-12-23 hep-th gr-qc

Tomás Ortín , Alejandro Ruipérez , Matteo Zatti This is my paper · ORCID
classification hep-thgr-qc
keywords alphablack-holesolutionscorrectionsequilibriummulti-centeranalyzeblack
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abstract

We compute the first-order $\alpha'$ corrections to well-known families of heterotic multi-center black-hole solutions in five and four dimensions. The solutions can be either supersymmetric or non-supersymmetric, depending on the relative sign between two of the black-hole charges. For both cases, we find that the equilibrium of forces persists after including the $\alpha'$ corrections, as the existence of multi-center solutions free of unphysical singularities shows. We analyze the possibility of black-hole fragmentation.

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  1. Multicenter higher-derivative BPS black holes

    hep-th 2025-02 conditional novelty 6.0 of 10

    Two- and three-charge BPS black holes of the torus-reduced heterotic action are rewritten in five-dimensional STU supergravity fields, and the resulting action is shown to differ from known N=2 R^2 invariants.

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