Physical Review Letters
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Universal Bound on the Duration of a Kination Era
Author(s): Cem Eröncel, Yann Gouttenoire, Ryosuke Sato, Géraldine Servant, and Peera Simakachorn
We show that primordial adiabatic curvature fluctuations generate an instability of the scalar field sourcing a kination era. We demonstrate that the generated higher Fourier modes constitute a radiationlike component dominating over the kination background after about 11 e-folds of cosmic expansion… [Phys. Rev. Lett. 135, 101002] Published Tue Sep 02, 2025
