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Extremal stringy black holes in equilibrium at first order in α'

by Tomás Ortín, Alejandro Ruipérez, Matteo Zatti

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Submission summary

Authors (as registered SciPost users): Tomás Ortín
Submission information
Preprint Link: https://arxiv.org/abs/2112.12764v2  (pdf)
Date accepted: 2023-10-11
Date submitted: 2023-10-04 10:51
Submitted by: Ortín, Tomás
Submitted to: SciPost Physics Core
Ontological classification
Academic field: Physics
Specialties:
  • Gravitation, Cosmology and Astroparticle Physics
  • High-Energy Physics - Theory
Approach: Theoretical

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.

Author comments upon resubmission

We are resubmitting this article to SciPost Physics core following the Editor's suggestion

List of changes

- We have added a sentence in the paragraph above Eq.~(D.4) explaining how
the vanishing of T^{(2)}{}_{++} is related to that of \mathcal{Z}_{+} in
the non-supersymmetric case.

- We have added the word extremal'' to the next to last paragraph in
page 4 and we have rewritten the first sentence of the last paragraph so
make its meaning more clear.

- Furthermore, we have replaced Ref.~[16] by a reference to a more recent
paper by one of us in which the corrections to the 4-charge solutions have
been computed but only in the particular case in which two of them are
equal. The case in which the 4 charges are independent still seems out of
our reach. We have added an explanation of this facts.

- At the beginning of page 7 (end of page 6 in the previous version) we
have replaced we'' by two of us''.

- We have added the references on multicenter black-hole solutions in
String Theory which we think are most relevant in this case in a long
footnote at the beginning of Section~2.

- We have modified the paragraph above Eq.~(4.5) to refer to the
definition of the curvature of the torsionful spin connection.

A detailed explanation of the changes is included in the answer to the referee's report.

Published as SciPost Phys. Core 6, 072 (2023)


Reports on this Submission

Report #1 by Anonymous (Referee 3) on 2023-10-5 (Invited Report)

Report

I would like to thank the authors for their careful consideration of my previous report and recommend the article be accepted for publication.

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