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On the stability of open-string orbifold models with broken supersymmetry

Abel, Steven; Coudarchet, Thibaut; Partouche, Hervé

On the stability of open-string orbifold models with broken supersymmetry Thumbnail


Thibaut Coudarchet

Hervé Partouche


We consider an open-string realisation of spontaneous breaking of supersymmetry in four-dimensional Minkowski spacetime. It is based on type IIB orientifold theory compactified on , with Scherk–Schwarz supersymmetry breaking implemented along . We show that in the regions of moduli space where the supersymmetry breaking scale is lower than the other scales, there exist configurations with minima that have massless Bose-Fermi degeneracy and hence vanishing one-loop effective potential, up to exponentially suppressed corrections. These backgrounds describe non-Abelian gauge theories, with all open-string moduli and blowing up modes of stabilized, while all untwisted closed-string moduli remain flat directions. Other backgrounds with strictly positive effective potentials exist, where the only instabilities arising at one loop are associated with the supersymmetry breaking scale, which runs away. All of these backgrounds are consistent non-perturbatively.


Abel, S., Coudarchet, T., & Partouche, H. (2020). On the stability of open-string orbifold models with broken supersymmetry. Nuclear Physics B, 957, Article 115100.

Journal Article Type Article
Acceptance Date Jun 7, 2020
Online Publication Date Jun 27, 2020
Publication Date 2020-08
Deposit Date Jul 1, 2020
Publicly Available Date Jul 15, 2020
Journal Nuclear Physics B
Print ISSN 0550-3213
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 957
Article Number 115100


Published Journal Article (10.5 Mb)

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Copyright Statement
&copy; 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license<br /> ( Funded by SCOAP3.

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