Table 2.
Independent cosmological parameters θ for BD-ΛCDM and GR-ΛCDM and, their fiducial values.
Parameter | Fiducial value |
---|---|
ω | 100 |
![]() |
1 |
![]() |
0.674 |
σ8 | 0.80 |
ωm0 = Ωm0h2 | 0.15 |
ωb0 = Ωb0h2 | 0.02 |
ns | 1.0 |
Notes. In GR, ω = ∞, Gm0/G = 1 and implicitly. Listed parameters are varied, while the photon temperature today Tγ0 = 2.7255 K, effective massless neutrino number Neff = 3.0 and primordial power spectrum pivot scale kpivot = 0.05 Mpc are fixed, and we always assume a flat universe. Derived parameters like the early scalar field
, Hubble constant h, primordial power spectrum amplitude As and dark energy density parameter ωΛ0 can differ in BD and GR universes with equal independent parameters. Using the same values of these parameters in BD-ΛCDM and GR-ΛCDM is equivalent to using the parameter transformation in Fig. 5a.
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