De Sitter vacua — when are ‘subleading corrections’ really subleading?

Jun 12, 2023
36 pages
Published in:
  • JHEP 11 (2023) 075
  • Published: Nov 13, 2023
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Abstract: (Springer)
We consider various string-loop, warping and curvature corrections that are expected to appear in type IIB moduli stabilisation scenarios. It has recently been argued, in the context of strongly-warped LVS de Sitter vacua, that it is impossible to achieve parametric suppression in all of these corrections simultaneously [1]. We investigate corrections in the context of the recently discovered weakly-warped LVS de Sitter vacua, which represent a distinct branch of solutions in type IIB flux compactifications. The weakly-warped solution is supported by small conifold flux numbers MK ≲ 32, but still requires a large flux contribution to the D3-tadpole, now from the bulk. Warping corrections become less problematic, and some corrections even help to reach the weakly-warped regime of parameter space. Other corrections continue to be dangerous and would require numerical coefficients to be computed — and found to be small — in order not to destroy the consistency of the weakly-warped LVS de Sitter solution. We motivate why this may be possible.
Note:
  • 35 pages, 5 figures and 3 tables; matches published version
  • Flux Compactifications
  • Superstring Vacua
  • vacuum state: de Sitter
  • moduli: stability
  • curvature: correction
  • compactification: flux
  • conifold
  • parametric
  • suppression