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Table 5.
Bayesian comparison for a selection of slow-roll inflationary models with wint fixed (see text for more details).
| Inflationary model | Potential V(ϕ) | Parameter range | Δχ2 | lnB |
|---|---|---|---|---|
| R + R2/(6M2) |  |
... | ... | … |
| Power-law potential |  |
... | 4.0 | −4.6 |
| Power-law potential |  |
... | 6.8 | −3.9 |
| Power-law potential |  |
... | 12.0 | −6.4 |
| Power-law potential |  |
... | 21.6 | −11.5 |
| Power-law potential | λMPlϕ3 | ... | 44.7 | −13.2 |
| Power-law potential | λϕ4 | ... | 75.3 | −56.0 |
| Non-minimal coupling | λ4ϕ4 + ξϕ2R/2 | −4 < log10ξ < 4 | 0.4 | −2.4 |
| Natural inflation | Λ4[1+cos(ϕ/f)] | 0.3 < log10(f/MPl) < 2.5 | 9.9 | −6.6 |
| Hilltop quadratic model |  |
0.3 < log10(μ2/MPl) < 4.85 | 1.3 | −2.0 |
| Hilltop quartic model |  |
−2 < log10(μ4/MPl) < 2 | −0.3 | −1.4 |
| D-brane inflation (p = 2) |  |
−6 < log10(μD 2/MPl) < 0.3 | −2.0 | 0.6 |
| D-brane inflation (p = 4) |  |
−6 < log10(μD 4/MPl) < 0.3 | −3.5 | −0.4 |
| Potential with exponential tails | Λ4[1−exp(−qϕ/MPl)+…] | −3 < log10q < 3 | −0.4 | −1.0 |
| Spontaneously broken SUSY | Λ4[1+αhlog(ϕ/MPl)+…] | −2.5 < log10αh < 1 | 6.7 | −6.8 |
| E-model (n = 1) |  |
 |
0.8 | −0.3 |
| E-model (n = 2) |  |
 |
0.8 | −1.6 |
| T-model (m = 1) |  |
 |
−0.1 | −1.2 |
| T-model (m = 2) |  |
 |
0.8 | −0.6 |
Notes. We quote 0.3 as the error on the Bayes factor. Models are strongly disfavoured when lnB < −5.
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