论文标题
全息启发的高斯 - 骨网宇宙学的原始扰动和通货膨胀
Primordial perturbations and inflation in a holography inspired Gauss-Bonnet cosmology
论文作者
论文摘要
我们考虑了重力的作用，除了爱因斯坦 - 希尔伯特（Einstein-Hilbert）的术语外，还包含Ricci标量和高斯 - 骨网不变的功能。所考虑的功能的特定形式是由全息宇宙学动机。在背景级别，场方程表示与全息宇宙学中相同形式的弗里德曼方程。我们计算宇宙学的扰动，并假设一般$ k $ - 充电，从而得出相应的功率谱。我们发现，所得功率谱与全息和标准宇宙学中获得的功率谱有很大不同。估计的频谱指数和张量量表比面对普朗克结果。
We consider an action for gravity that, in addition to the Einstein-Hilbert term, contains a function of the Ricci scalar and the Gauss-Bonnet invariant. The specific form of the function considered is motivated by holographic cosmology. At background level the field equations imply modified Friedmann equations of the same form as those in the holographic cosmology. We calculate the cosmological perturbations and derive the corresponding power spectra assuming a general $k$-inflation. We find that the resulting power spectra differ substantially from those obtained in both holographic and standard cosmology. The estimated spectral index and tensor-to-scalar ratio are confronted with the Planck results.
