Age of the Universe, Average Deceleration Parameter and Possible Implications for the End of Cosmology

Understand

A new expression to the total age of the Universe is derived in terms of the average deceleration parameter.

• This kinematic result holds regardless of the curvature of the universe as well as of the underlying gravity theory.
• It remains valid even in the context of brane-world motivated cosmologies.
• Since the present age parameter of the Universe is accurately adjusted to $H_0t_0 = 1$, it is shown that the time averaged value of the deceleration parameter is zero.