95% CL upper bounds on the tensor-to-scalar ratio (actually the tensor-to-curvature power ratio) at the primordial time, r, and earlier, at the Hubble radius exit time during inflation, , at k = 0.05 Mpc-1.
|Model (and data)||r 0.05|
|CDI+r (TT, TE, EE+lowP)||0.092||0.092||0.043|
|ADI+r (TT, TE, EE+lowP)||0.094||0.094||0.044|
Notes. In the pure adiabatic case r and are equal. In the last column indicates the tensor contribution to the temperature angular power at ℓ = 10 relative to the temperature power from scalar perturbations ().
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