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Weak gravity (and other conjectures) with broken supersymmetry

Abstract : We study the weak gravity conjecture in non-supersymmetric string theory setups. Precisely, those are type I string theory with supersymmetry broken \`a la Scherk-Schwarz and open strings on D branes wrapped around magnetized tori in type II string theory. We compute long-range interactions between identical branes at one-loop and compare them to the weak gravity conjecture for higher-degree forms. In our examples, SUSY breaking generates interactions between branes, which are not anymore BPS, in such a way that the weak gravity conjecture is verified. In type I with the Scherk-Schwarz mechanism, the tension of the branes is reduced by one-loop quantum effects, so that there are long-range repulsive forces. The correlation of the non-vanishing brane potential with the presence of a running modulus and of possible D branes bound states nicely connects to other swampland conjectures. For magnetized branes in type II strings, we check that non-BPS branes experience a long-range repulsion whenever the open string spectrum is tachyon-free. Ultimately, the role of stringy objects in the discussion makes it compelling to further understand swampland conjectures in strings with broken SUSY, let alone their phenomenological relevance.
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Preprints, Working Papers, ...
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https://hal-cnrs.archives-ouvertes.fr/hal-02566052
Contributor : Emilian Dudas <>
Submitted on : Wednesday, May 6, 2020 - 6:16:05 PM
Last modification on : Thursday, May 7, 2020 - 1:43:27 AM

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  • HAL Id : hal-02566052, version 1
  • ARXIV : 2003.14126

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Quentin Bonnefoy, Emilian Dudas, Severin Lust. Weak gravity (and other conjectures) with broken supersymmetry. 2020. ⟨hal-02566052⟩

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