What if string theory has no de Sitter vacua?

2018/04/03 by Ulf H. Danielsson, Thomas Van Riet · 1 voice · 11 citations
Social Sciences · Physics and Astronomy · #International Science and Diplomacy #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies

paper · pdf · doi:10.1142/s0218271818300070

Abstract

We present a brief overview of attempts to construct de Sitter vacua in string theory and explain how the results of this 20-year endeavor could point to the fact that string theory harbors no de Sitter vacua at all. Making such a statement is often considered controversial and “bad news for string theory”. We discuss how perhaps the opposite can be true.

Citations

• De Sitter hunting in a classical landscape
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• The dS/CFT correspondence
• Exotic RG flows from holography

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• O(16)×O(16) heterotic theory on AdS₃× S³× T⁴
• Symmetry Points of N=1 Modular Geometry
• de Sitter no-go's for Riemann-flat manifolds and a link to semidefinite optimisation
• 4D de Sitter from 6D gauged supergravity with Green-Schwarz counterterm
• Cosmological trans-Planckian conjectures are not effective
• Can an Anti-de Sitter Vacuum in the Dark Energy Sector Explain JWST High-Redshift Galaxy and Reionization Observations?
• Axions, Three-Forms, and M-Theory

Discussions

• Almost nothing in the swampland community is "beyond doubt". A very short summary of the situation from two years ago is still valid today. If there's a crisis happening, it's simply that the followin [stackexchange, 18 points]

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