Article Dans Une Revue Journal of High Energy Physics Année : 2023

(Quasi-) de Sitter solutions across dimensions and the TCC bound

Résumé

In this work, we investigate the existence of string theory solutions with a d-dimensional (quasi-) de Sitter spacetime, for 3d10. Considering classical compactifications, we derive no-go theorems valid for general d. We use them to exclude (quasi-) de Sitter solutions for d7. In addition, such solutions are found unlikely to exist in d=6,5. For each no-go theorem, we further compute the d-dependent parameter c of the swampland de Sitter conjecture, Mp|V|Vc. Remarkably, the TCC bound c2(d1)(d2) is then perfectly satisfied for d4, with several saturation cases. However, we observe a violation of this bound in d=3. We finally comment on related proposals in the literature, on the swampland distance conjecture and its decay rate, and on the so-called accelerated expansion bound.

Dates et versions

hal-03777354 , version 1 (14-09-2022)

Identifiants

Citer

David Andriot, Ludwig Horer. (Quasi-) de Sitter solutions across dimensions and the TCC bound. Journal of High Energy Physics, 2023, 01, pp.020. ⟨10.1007/JHEP01(2023)020⟩. ⟨hal-03777354⟩
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