Eternal Chaotic Inflation is Prohibited by Weak Gravity Conjecture

Abstract

We investigate whether the eternal chaotic inflation can be achieved when the weak gravity conjecture is taken into account. We show that even the assisted chaotic inflation with potential $\lambda {\varphi }^4$ or $m^2{\varphi }^2$ can not be eternal. The effective field theory description for the inflaton field breaks down before inflation reaches the eternal regime. We also find that the total number of e-folds is still bounded by the inflationary entropy for the assisted inflation.

10 pages

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• Simple Bounds from the Perturbative Regime of Inflation
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• Preventing eternality in phantom inflation
• Dark Matter via Many Copies of the Standard Model
• Theoretical Limits on Agegraphic Quintessence from Weak Gravity Conjecture
• Weak Gravity Conjecture for the Effective Field Theories with N Species
• Is Non-minimal Inflation Eternal?
• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
• Phase Diagram for Nflation
• M-flation and its spectators