The trouble with asymptotically safe inflation
European Physical Journal C（2013）
摘要
In this paper we investigate the perturbation theory of 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 asymptotically safe inflation.
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关键词
Ghost, Asymptotic Safety, Renormalization Group Flow, Einstein Hilbert Term, Effective Coupling Constant
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