The upper bound on the tensor-to-scalar ratio consistent with quantum gravity

Lina Wu,Qing Gao,Yungui Gong,Yiding Jia,Tianjun Li

Table 2. The low bound of inflaton excursion. Δφ is numerically calculated from equation (8), and δφ is calculated with high order corrections under the slow roll approximation. Here the tensor-to-scalar ratio is fixed to be r = 0.01.

ns Δφ(MPl) δφ(MPl) 0.9625 1.30117 1.11196 0.9655 1.29696 1.10843 0.9685 1.29244 1.10351