The Possibility of Inflation in Asymptotically Safe Gravity

Abstract

We examine the inflationary modes in the cubic curvature theories in the context of asymptotically safe gravity. On the phase space of the Hubble parameter, there exists a critical point which corresponds to the slow-roll inflation in Einstein frame. Most of the e-foldings are attained around the critical point for each inflationary trajectories. If the coupling constants $g_i$ have the parametric relations generated as the power of the relative energy scale of inflation $H_0$ to the ultraviolet cutoff $\Lambda$, a successful inflation with more than 60 e-foldings occurs near the critical point.

14 pages, 4 figures

References in corpus (6)

• Fixed Points of Higher Derivative Gravity
• Taming perturbative divergences in asymptotically safe gravity
• Inflationary solutions in asymptotically safe f(R) theories
• Asymptotically safe gravity as a scalar-tensor theory and its cosmological implications
• Primordial Entropy Production and Lambda-driven Inflation from Quantum Einstein Gravity
• Comment on Asymptotically Safe Inflation

Cited by in corpus (2)

• Asymptotic safety of higher derivative quantum gravity non-minimally coupled with a matter system
• Asymptotically safe inflation from quadratic gravity