Dev Notes
Conventions
This package works in Planck units, i.e.
$c = ħ = ϵ₀ = k_B = 1$
Note that G ≠ 1
.
Conventionally, any scalar function of time, such as \eta
, takes as input the logarithm of the scale factor x ≡ log(a)
. Any scalar function of time which does not operate on x
must be marked with an underscore for the variable it does take, for example H_a
.