arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.10133gr-qcastro-ph.CO
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宇宙吸引子方法在Einstein-Gauss-Bonnet引力中的推广

Generalization of cosmological attractor approach to Einstein-Gauss-Bonnet gravity

E. O. Pozdeeva

摘要:

我们构建模型的高斯-邦纳项乘以一个函数的标量场导致暴胀的情况。考虑与慢滚近似。宇宙学吸引子方法给出了标量扰动的谱指数,它与现代观测符合得很好,并允许张量与标量之比的变化。我们重建模型的参数的变化,允许再现宇宙学吸引子预测的膨胀参数的领先顺序的$1/N$近似在Einstein-Gauss-Bonnet引力。

英文摘要:

We construct models with the Gauss-Bonnet term multiplied to a function of the scalar field leading to inflationary scenario. The consideration is related with the slow-roll approximation. The cosmological attractor approach gives the spectral index of scalar perturbations which is in a good agreement with modern observation and allows variability for tensor-to-scalar ratio. We reconstruct models with variability of parameters which allow to reproduce cosmological attractor predictions for inflationary parameters in the leading order of $1/N$ approximation in the Einstein-Gauss-Bonnet gravity.

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