The upper bound on the tensor-to-scalar ratio consistent with quantum gravity
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The upper bound on the tensor-to-scalar ratio consistent with quantum gravity |
| Lina Wu,Qing Gao,Yungui Gong,Yiding Jia,Tianjun Li |
| Figure 1. r versus Δφ for the polynomial inflation. Here the e-folding number, the scalar spectral index and the relative running are fixed to be N = 55, ns = 0.9649, and αs = − 0.0045, respectively. The red line corresponds to the the low bound on the inflaton excursion. The three horizontal dashed lines correspond to Δφ = 0.632, 1.0, 2.0 MPl, respectively. |
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