Friedmann Equation demonstration - Liddle

[go quantum!]

Are you confortable with the demonstration in page 19 of Introduction to Modern Cosmology - A. Liddle ? My problem is in particular eq. (3.4) when he writes the potential energy of a test particle. I think there is a factor of 2 missing in the denominator.

 

[edgepflow]

Equation 3.4 looks OK to me. He posts corrections on:

http://astronomy.sussex.ac.uk/~andrewl/cosbook.html