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Table 1
Cosmological parameter definitions.
| Parameter | Definition |
|
|
|
| Ωb.......... | Baryon fraction today (compared to critical density) |
| Ωc .......... | Cold dark matter fraction today (compared to critical density) |
| h.......... | Current expansion rate (as fraction of 100 km s-1 Mpc-1) |
| θMC .......... | Approximation to the angular size of sound horizon at last scattering |
| τ .......... | Thomson scattering optical depth of reionized intergalactic medium |
| Neff .......... | Effective number of massive and massless neutrinos |
| Σmν .......... | Sum of neutrino masses |
| YP .......... | Fraction of baryonic mass in primordial helium |
| ΩK .......... | Spatial curvature parameter |
| wde .......... | Dark energy equation of state parameter (i.e., p/ρ) (assumed constant) |
| ℛ .......... | Curvature perturbation |
| ℐ .......... | Isocurvature perturbation |
 .......... |
Power spectrum of X |
| AX .......... | X power spectrum amplitude (at k=0.05 Mpc-1) |
| ns .......... | Scalar spectrum spectral index (at k=0.05 Mpc-1, unless otherwise stated) |
| dns/ d lnk .......... | Running of scalar spectral index (at k=0.05 Mpc-1, unless otherwise stated) |
| d2ns/ d lnk2 .......... | Running of running of scalar spectral index (at k=0.05 Mpc-1) |
| r | Tensor-to-scalar power ratio (at k=0.05 Mpc-1, unless otherwise stated) |
| nt .......... | Tensor spectrum spectral index (at k=0.05 Mpc-1) |
| dnt/ d lnk .......... | Running of tensor spectral index (at k=0.05 Mpc-1) |
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