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Decay channels for double extremal black holes in four dimensions
by Johannes Aspman, Jan Manschot
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Johannes Aspman · Jan Manschot |
| Submission information | |
|---|---|
| Preprint Link: | scipost_202311_00025v1 (pdf) |
| Date accepted: | 2024-01-02 |
| Date submitted: | 2023-11-14 10:40 |
| Submitted by: | Aspman, Johannes |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
We explore decay channels for charged black holes with vanishing temperature in $\mathcal{N}=2$ supersymmetric compactifications of string theory. If not protected by supersymmetry, such extremal black holes are expected to decay as a consequence of the weak gravity conjecture. We concentrate on double extremal, non-supersymmetric black holes for which the values of the scalar fields are constant throughout space-time, and explore decay channels for which decay into BPS and anti-BPS constituents is energetically favorable. We demonstrate the existence of decay channels at tree level for large families of double extremal black holes. For specific charges, we also find stable non-supersymmetric black holes, suggesting recombination of (anti)-supersymmetric constituents to a non-supersymmetric object.
Author comments upon resubmission
List of changes
Below we list the changes we have made per the comments from the two referees.
p.2 below Eq. (1.1) we altered our presentation slightly to highlight what we meant with our comments on the WGC and UV completion.
p.2 second-to-last paragraph, we indicate that what we are studying are the ratio of masses between the black holes and their constituents.
p.3 first paragraph, we have highlighted the fact that we are working in the supergravity description of the non-supersymmetric black holes.
p.3 list entry 1, we extended the discussion a bit to answer the questions of the referees, as well as indicating the fact that we are only considering the F-term corrections when we do higher order corrections.
p.5 below (2.7), we highlighted that the 11D Plack units are used in Sec. 5, since one of the referees was wondering why we needed this comment.
p.9, start of Sec. 2.3, we altered the phrasing slightly to try and make clearer what we meant
p.10, below (2.34) we mention that the shifts of variables are motivated by a spectral flow, after the suggestion of one of the referees.
Sec. 2.4, the structure of the Section was rearranged substantially, after the suggestion of one of the referees, moving the equations (2.33) and so on forward. Things were just moved around, not removed or added.
p.12 below (2.46), we added a sentence to motivate the name "polar states", together with some references.
p.13 below (3.3), highlighted the fact that we are only considering F-term corrections.
p.24 first paragraph, added the reference [61] after it came to our attention from one of the referees.
p.31 second paragraph of the Discussion, we extended the discussion of the R^2 corrections, highlighting for example that we are only considering the F-term corrections.
p.32, we added Table 1 summarising the various decay channels, after the suggestion of one of the referees.
Published as SciPost Phys. 16, 021 (2024)
Reports on this Submission
Strengths
The paper discusses an important question in quantum gravity related to the weak gravity conjecture.
The obtained results are original and sound.
Weaknesses
This is only a supergravity computation.
Report
The authors have addressed all the queries I had in my first report and I therefore recommend the paper for publication without any further modifications.
Requested changes
none