A note on obstinate tachyons in classical dS solutions
arXiv:1212.5178 · doi:10.1007/JHEP03(2013)138
Abstract
The stabilisation of the dilaton and volume in tree-level flux compactifications leads to model independent and thus very powerful existence and stability criteria for dS solutions. In this paper we show that the sizes of cycles wrapped by orientifold planes are scalars whose scalings in the potential are not entirely model independent, but enough to entail strong stability constraints. For all known dS solutions arising from massive IIA supergravity flux compactifications on SU(3)-structure manifolds the tachyons are exactly within the subspace spanned by the dilaton, the total volume and the volumes of the orientifold cycles. We illustrate this in detail for the well-studied case of the O6 plane compactification on SU(2)xSU(2)/Z_2xZ_2. For that example we uncover another novel structure in the tachyon spectrum: the dS solutions have a singular, but supersymmetric, Minkowski limit, in which the tachyon exactly aligns with the sgoldstino.
22 pages; v2: added references, minor changes
References in corpus (25)
- De Sitter Vacua from Matter Superpotentials
- Inflationary Constraints on Type IIA String Theory
- Simple de Sitter Solutions
- Locally stable non-supersymmetric Minkowski vacua in supergravity
- The effective theory of type IIA AdS4 compactifications on nilmanifolds and cosets
- Micromanaging de Sitter holography
- On Slow-roll Moduli Inflation in Massive IIA Supergravity with Metric Fluxes
- On the Cosmology of Type IIA Compactifications on SU(3)-structure Manifolds
- Smeared versus localised sources in flux compactifications
- Comments on the Fayet-Iliopoulos Term in Field Theory and Supergravity
- On Classical de Sitter Vacua in String Theory
- Charting the landscape of N=4 flux compactifications
- On the distribution of stable de Sitter vacua
- Minimal Simple de Sitter Solutions
- Cosmology From Random Multifield Potentials
- Supersymmetry breaking branes on solvmanifolds and de Sitter vacua in string theory
- Toroidal Orientifolds in IIA with General NS-NS Fluxes
- Landskepticism: or Why Effective Potentials Don't Count String Models
- Towards a Realistic Type IIA T^6/Z_4 Orientifold Model with Background Fluxes, Part 1: Moduli Stabilization
- de Sitter vacua in N = 8 supergravity and slow-roll conditions
- Dynamics of Generalized Assisted Inflation
- No metastable de Sitter vacua in N=2 supergravity with only hypermultiplets
- The Top 10^{500} Reasons Not to Believe in the Landscape
- Metastable supersymmetry breaking in extended supergravity
- Gaugings at angles from orientifold reductions
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- The web of swampland conjectures and the TCC bound
- On the distribution of stable de Sitter vacua
- A Flux-Scaling Scenario for High-Scale Moduli Stabilization in String Theory
- Bounds on Slow Roll at the Boundary of the Landscape
- New constraints on classical de Sitter: flirting with the swampland
- Do cosmological observations allow a negative ?
- Slow-Roll Inflation in Non-geometric Flux Compactification
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- More stable dS vacua from S-dual non-geometric fluxes
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- Open problems on classical de Sitter solutions
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- No classical (anti-)de Sitter solutions with O8-planes
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- New solutions with accelerated expansion in string theory
- Tachyonic de Sitter solutions of 10d type II supergravities
- A new light on the darkest corner of the landscape
- De Sitter vacua from a D-term generated racetrack potential in hypersurface Calabi-Yau compactifications
- Negative scalar potentials and the swampland: an Anti-Trans-Planckian Censorship Conjecture
- Rigid nongeometric orientifolds and the swampland
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