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Chiral Heterotic Strings with Positive Cosmological Constant

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arxiv 1608.04582 v2 pith:HTBV4FPP submitted 2016-08-16 hep-th

classification hep-th
keywords constantcosmologicaldynamicallyheteroticpositiveaffectedbreakingbroken
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abstract

We present explicit examples of semi-realistic heterotic models with spontaneously broken supersymmetry, which dynamically lead to breaking scales much smaller than $M_{\rm Planck}$ and exponentially small positive values for the cosmological constant. Contrary to field theoretic intuition, we find that the global structure of the effective potential is significantly affected by contributions of massive and non-level matched string states and we investigate the conditions that dynamically ensure a number of desired properties.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 61 citations worldwide. Full citation record

  1. A Perturbatively Stable Non-Supersymmetric String Model with AdS Vacuum

    hep-th 2025-04 conditional novelty 6.0 of 10

    A non-supersymmetric type II string model is constructed with a tachyon-free spectrum and a one-loop vacuum that is perturbatively stable at the self-dual point.

  2. Dark energy from string theory: an introductory review

    hep-th 2026-03 unverdicted novelty 2.0 of 10

    String theory imposes constraints on dark energy but permits various construction attempts for de Sitter vacua and single-field exponential quintessence models despite obstructions.

  3. Dark Horse, Dark Matter: Revisiting the SO(16)x SO(16)' Nonsupersymmetric Model in the LHC and Dark Energy Era

    hep-th 2019-07 unverdicted novelty 2.0 of 10

    Reexamination of the SO(16)xSO(16)' nonsupersymmetric model for implications on dark energy, vacuum stabilization, dark matter candidates, and gauge-Higgs unification in light of LHC and dark energy data.

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