Quote by MTd2
That much? I thought models that considered a duration of 10^32s with an expansion of e^60 ~ 10^26, which would mean 10^54 for each second... That is on average. I'd like to know the peak rate.

The amount of expansion is commonly given in terms of the number of efolds of expansion, N, where [itex]a(t) = a(t_i)e^{N}[/itex]. From this expression the rate of change is seen to be
[tex]\frac{dN}{dt} = H[/tex]