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On the stability of open-string orbifold models with broken supersymmetry
Nuclear Physics B ( IF 2.8 ) Pub Date : 2020-06-27 , DOI: 10.1016/j.nuclphysb.2020.115100
Steven Abel , Thibaut Coudarchet , Hervé Partouche

We consider an open-string realisation of N=2N=0 spontaneous breaking of supersymmetry in four-dimensional Minkowski spacetime. It is based on type IIB orientifold theory compactified on T2×T4/Z2, with Scherk–Schwarz supersymmetry breaking implemented along T2. 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 T4/Z2 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.



中文翻译:

打破超对称的开放弦乐双向模型的稳定性

我们考虑一个开放字符串实现 ñ=2ñ=0二维Minkowski时空中超对称性的自然打破。它是基于IIB型万向节理论精炼而成的Ť2׍4/ž2,随着Scherk–Schwarz超对称的打破, Ť2。我们显示,在超对称破坏尺度低于其他尺度的模空间区域中,存在具有无质量Bose-Fermi简并因此消失的单环有效电势的极小配置,直至指数抑制校正。这些背景描述了非阿贝尔规范的理论,具有所有的开弦模量和爆炸模态。Ť4/ž2稳定,而所有未扭转的闭弦模量保持平坦方向。存在具有严格正有效电位的其他背景,其中在一个回路处出现的唯一不稳定性与超对称断裂尺度有关,后者逐渐消失。所有这些背景都是非扰动一致的。

更新日期:2020-07-03
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