标题： 从高阶导数量子引力的暴涨宇宙 显示英文标题

标题： Inflationary universe from higher-derivative quantum gravity

摘要： 我们研究了高阶导数量子引力，其中超出一环近似的重正化群改进的有效作用量被推导出来。 利用这个有效作用量，分析了量子修正的FRW方程。发现了一个德西特宇宙解。 证明了这种德西特膨胀宇宙是不稳定的。 计算了慢滚膨胀参数。 估计了重正化群改进的高斯-博内项对量子修正的FRW方程以及德西特宇宙不稳定性的贡献。 表明在这种情况下，谱指数和张量-标量比与普朗克数据一致。 显示英文摘要

摘要： We consider higher-derivative quantum gravity where renormalization group improved effective action beyond one-loop approximation is derived. Using this effective action, the quantum-corrected FRW equations are analyzed. De Sitter universe solution is found. It is demonstrated that such de Sitter inflationary universe is instable. The slow-roll inflationary parameters are calculated. The contribution of renormalization group improved Gauss-Bonnet term to quantum-corrected FRW equations as well as to instability of de Sitter universe is estimated. It is demonstrated that in this case the spectral index and tensor-to-scalar ratio are consistent with Planck data.