- #1

- 370

- 0

## Main Question or Discussion Point

According to the wikipedia entry, the latest values for the Lambda-CDM model parameters for the age of the Universe, [itex]t_0[/itex], and the Hubble constant, [itex]H_0[/itex] are

[itex]t_0 = 13.75 \pm 0.11 \times 10^9 \mbox{ years}[/itex]

[itex]H_0 = 70.4 \pm 1.3 \mbox{ km s}^{-1} \mbox{Mpc}^{-1}[/itex]

If you combine the errors this implies the following relationship

[itex]t_0 H_0 = 0.99 \pm 0.02[/itex]

Why is the age of the universe the reciprocal of the Hubble constant to within experimental error?

Is this just a coincidence?

It almost seems that the entire Lambda-CDM model could simply be summarized by

[itex] a(t) = H_0 t [/itex].

[itex]t_0 = 13.75 \pm 0.11 \times 10^9 \mbox{ years}[/itex]

[itex]H_0 = 70.4 \pm 1.3 \mbox{ km s}^{-1} \mbox{Mpc}^{-1}[/itex]

If you combine the errors this implies the following relationship

[itex]t_0 H_0 = 0.99 \pm 0.02[/itex]

Why is the age of the universe the reciprocal of the Hubble constant to within experimental error?

Is this just a coincidence?

It almost seems that the entire Lambda-CDM model could simply be summarized by

[itex] a(t) = H_0 t [/itex].