Recently, based on swampland considerations in string theory, the (no) eternal inflation principle has been put forward. The natural question arises whether similar conditions hold other approaches to quantum gravity. In this article, asymptotic safety hypothesis is considered context of inflation. As exemplary inflationary models SU(N) Yang-Mills Veneziano limit and various RG-improvements gra...

Non-trivial inflaton self-interactions can yield calculable signatures of primordial non-Gaussianity that are measurable in cosmic surveys. Surprisingly, we find the phase transition to slow-roll eternal inflation is often incalculable same models. Instead, this sensitive non-Gaussian tail distribution scalar fluctuations, which probes physics inside horizon, potentially beyond cutoff scale Eff...