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

Tomás Ortín, Alejandro Ruipérez, Matteo Zatti

SciPost Phys. Core 6, 072 (2023) · published 31 October 2023

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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