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Dynamical dark energy in 0'B braneworlds

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arxiv 2502.20438 v1 pith:QVDM4E75 submitted 2025-02-27 hep-th gr-qchep-ph

Dynamical dark energy in 0'B braneworlds

classification hep-th gr-qchep-ph
keywords darkcosmologydynamicalenergylate-timeparticlephysicsalthough
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We build a novel realization of dark bubble cosmology in non-supersymmetric string theory. Among the simplest models in ten dimensions, the type 0'B orientifold is the unique option which yields a scale-separated construction. The resulting setting produces a logarithmically varying dynamical dark energy, reflecting its holographic counterpart in terms of running gauge couplings. We analyze in detail the phenomenological consequences of the model for particle physics, inflation and late-time cosmology. We find that, although particle physics may be consistently realized, neither early-time nor late-time are observationally viable.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Coherent states versus Glauber-Sudarshan States: Bootstrapping, Schwinger-Keldysh Contours and Lefschetz Thimbles

    hep-th 2026-07 conditional novelty 5.0

    Quasi-de Sitter spacetimes can be realized as Glauber-Sudarshan excited states built over supersymmetric Minkowski vacua, held consistent by a bootstrap self-consistency equation rather than by a potential minimum.

  2. Instabilities in scale-separated Casimir vacua

    hep-th 2025-07 unverdicted novelty 5.0

    Casimir-stabilized AdS vacua with parametric scale separation in supergravity exhibit perturbative and non-perturbative instabilities under deformations.

  3. Aspects of strings without spacetime supersymmetry

    hep-th 2025-09 unverdicted novelty 2.0

    A survey of tachyons and tadpoles in non-supersymmetric closed and orientifold strings, including ten-dimensional models and landscape attempts.