Non-linear stability of α′-corrected Friedmann equations

Non-linear stability of α′-corrected Friedmann equations

A bstract We study the non-linear stability of fixed-point solutions to the α ′-exact equations from O( d, d ) invariant cosmology, with and without matter perturbations. Previous non-linear analysis in the literature is revisited, and its compatibility with known linear perturbation results is show...

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Veröffentlicht in:The journal of high energy physics 2023-03, Vol.2023 (3), p.119-17, Article 119
Hauptverfasser: Bernardo, Heliudson, Chojnacki, Jan, Comeau, Vincent
Format: Artikel
Sprache:eng
Schlagworte:
Classical and Quantum Gravitation
Cosmology
Cosmology of Theories BSM
Elementary Particles
Energy
High energy physics
Invariants
Mathematical analysis
Nonlinear analysis
Perturbation
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Stability
String Duality
String Theory
Superstring Vacua
Symmetry
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Zusammenfassung:A bstract We study the non-linear stability of fixed-point solutions to the α ′-exact equations from O( d, d ) invariant cosmology, with and without matter perturbations. Previous non-linear analysis in the literature is revisited, and its compatibility with known linear perturbation results is shown. Some formal aspects of cosmological perturbations in duality invariant cosmology are discussed, and we show the existence of time-reparameterization invariant variables for perturbations.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP03(2023)119