Kination, meet Kasner: on the asymptotic cosmology of string compactifications
Fien Apers, Joseph P. Conlon, Martin Mosny, Filippo Revello
Abstract
A bstract We study runaway, kination-dominated epochs in string cosmology. We show how the apparent classical decompactification runaway of the volume modulus, described by a kination epoch in the 4-dimensional EFT, can be uplifted to a classical Kasner solution in 10d in which the non-compact dimensions collapse towards a Big Crunch. This can also be generalised for arbitrary spacetime and compactification dimensions. We conclude with some comments on how this picture is modified by quantum effects, and the need for both dynamical and kinematical Swampland constraints.
Topics & Concepts
PhysicsCompactification (mathematics)Big CrunchTheoretical physicsCosmologyString cosmologySpacetimeString theoryModuliString (physics)Mathematical physicsClassical mechanicsQuantum gravityDe Sitter universeQuantumRelationship between string theory and quantum field theoryQuantum mechanicsUniversePure mathematicsSteady State theoryMathematicsBlack Holes and Theoretical PhysicsCosmology and Gravitation TheoriesParticle physics theoretical and experimental studies