3.1.2. H0 Versus Cosmic Age
For H0 60, the age is 10.9 Gyr for the EdS universe. This is too short. must be smaller than unity. If we take t0 > 11.5 Gyr < 0.7. The limit is weak, but the significance is that EdS universe is nearly excluded.
60, the
age is 10.9 Gyr for the EdS universe. This is too
short. 
must be smaller than
unity. If we take t0 > 11.5 Gyr