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## Homework Statement

Metric: ds^2 = -c^2 dt^2 + (t/t*) (dx^2 + dy^2 + dz^2)

(I guess t* is a constant?)

Is this universe matter dominant? Explain

## Homework Equations

## The Attempt at a Solution

I guess you have to use the FRW equation?

Assuming the usual FRW form, we set a^2 = t/t*

to find H^2 depends on 1/a^4. This means it's radiation dominant, right?

Thanks