The trouble with asymptotically safe inflation

Abstract

In this paper we investigate the perturbation theory of the asymptotically safe inflation and we find that all modes of gravitational waves perturbation become ghosts in order to achieve a large enough number of e-folds. Formally we can calculate the power spectrum of gravitational waves perturbation, but we find that it is negative. It indicates that there is serious trouble with the asymptotically safe inflation.

13 pages, 1 figure

References in corpus (4)

• Asymptotic safety in higher-derivative gravity
• Ultraviolet properties of f(R)-Gravity
• Taming perturbative divergences in asymptotically safe gravity
• Comment on Asymptotically Safe Inflation

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