Tachyonic de Sitter Solutions of 10d Type II Supergravities

Cosmological models of the early or late universe exhibit (quasi) de Sitter space‐times with different stability properties. Considering models derived from string theory, the swampland program does not provide for now a definite characterisation of this stability. In this work we focus on de Sitter...

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Bibliographic Details
Published in:Fortschritte der Physik 2021-07, Vol.69 (7), p.n/a
Main Author: Andriot, David
Format: Article
Language:English
Subjects:
classical de Sitter solutions
cosmology
string phenomenology
supergravity compactifications
tachyons
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Summary:Cosmological models of the early or late universe exhibit (quasi) de Sitter space‐times with different stability properties. Considering models derived from string theory, the swampland program does not provide for now a definite characterisation of this stability. In this work we focus on de Sitter solutions of 10d type II supergravities, candidates for classical de Sitter string backgrounds: surprisingly, all known examples are unstable with ηV
ISSN:0015-8208
1521-3978
DOI:10.1002/prop.202100063