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arXiv · 2504.19364

A Perturbatively Stable Non-Supersymmetric String Model with AdS Vacuum

Ignatios Antoniadis·Alonzo R. Diaz Avalos·Alon E. Faraggi
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Abstract

We present a construction of a perturbatively stable non-supersymmetric type II closed string model in four dimensions. It is based on a freely acting Scherk-Schwarz Z2-deformation of a supersymmetric construction which is recovered in appropriate decompactification limits. The model exhibits also the so-called misaligned supersymmetry with alternating signs for the number difference between bosons and fermions at successive mass levels. The tree-level spectrum is tachyon free for any value of the radii and moduli. At one loop level, the scalar potential has a non-supersymmetric minimum at the self-dual (free fermionic) point with negative energy, around which all tree-level massless scalars acquire positive masses. The model is thus non-supersymmetric and perturbatively stable.

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Ignatios Antoniadis, Alonzo R. Diaz Avalos, Alon E. Faraggi. 2025-04-27. A Perturbatively Stable Non-Supersymmetric String Model with AdS Vacuum. https://arxiv.org/abs/2504.19364

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