de Sitter extrema and the swampland

Abstract

Recently it has been conjectured that string theory does not allow for dS vacua or dS extrema. To scrutinize such a conjecture, it is important to study concrete string theory compactifications and spell out their assumptions and potential shortcomings. We do so for one particular class of string compactifications, namely classical compactifications of type II string theory with fluxes, D-branes and O-planes on manifolds with SU(3) structure. In particular, we revisit previously found dS critical points, construct many new ones and check whether they invalidate the dS swampland conjecture.

arXiv comment18 pages

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• The web of swampland conjectures and the TCC bound
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• Swampland Conjectures for Strings and Membranes
• A Holographic Derivation of the Weak Gravity Conjecture
• Eternal Inflation and Swampland Conjectures
• Do We Live in the Swampland?
• Gaugino condensation and small uplifts in KKLT
• Bounds on Slow Roll at the Boundary of the Landscape
• Runaway Quintessence, Out of the Swampland
• Conditions for (No) Eternal Inflation
• Steep Eternal Inflation and the Swampland
• Swampland, Axions and Minimal Warm Inflation
• The quantum swampland
• Quantum Corrections and the de Sitter Swampland Conjecture
• Open problems on classical de Sitter solutions
• Modular Symmetries and the Swampland Conjectures
• Weakly Coupled de Sitter Vacua with Fluxes and the Swampland
• A Strong Scalar Weak Gravity Conjecture and Some Implications
• Computational Complexity of Vacua and Near-Vacua in Field and String Theory
• Scaling limits of dS vacua and the swampland
• Phenomenological Consequences of the Refined Swampland Conjecture
• Electroweak relaxation of cosmological hierarchy
• Quantum aspects of chaos and complexity from bouncing cosmology: A study with two-mode single field squeezed state formalism
• Pleasant behavior of swampland conjectures in the face of specific inflationary models
• Trans-Planckian Censorship Conjecture and Non-thermal post-inflationary history
• Hyperbolic field space and swampland conjecture for DBI scalar
• What does Inflation say about Dark Energy given the Swampland Conjectures?
• No classical (anti-)de Sitter solutions with O8-planes
• Multi-field Inflation in High-Slope Potentials
• Intricacies of classical de Sitter string backgrounds
• de Sitter Space as a Glauber-Sudarshan State
• Revisiting the Scalar Weak Gravity Conjecture
• Tachyonic de Sitter solutions of 10d type II supergravities
• Charting the landscape of (anti-) de Sitter and Minkowski solutions of 10d supergravities
• f(R) and Brans-Dicke Theories and the Swampland
• A dS obstruction and its phenomenological consequences
• Reheating Constraints on Inflaton, Dark Matter: Swampland Conjecture
• Rigid nongeometric orientifolds and the swampland
• Topological Eternal Hilltop Inflation and the Swampland Criteria
• $T$-dualizing the de-Sitter no-go scenarios
• Remarks on the effects of quantum corrections on moduli stabilization and de Sitter vacua in type IIB string theory
• On stable type IIA de-Sitter vacua with geometric flux
• Reference level of the vacuum energy density of the Universe and astrophysical data
• Dyonic Catalysis in the KPV Vacuum Decay
• Finite temperature effects in modular cosmology
• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
• Scalar field inflation driven by a modification of the Heisenberg algebra
• Hořava-Lifshitz $F(\bar{R})$ theories and the Swampland
• Systematic exploration of the non-geometric flux landscape