In Eq. (17) [Math Processing Error]ρ means the effective energy density of the fluid filling the Universe. We find a very simple interpretation of (11): the evolution of the Universe is equivalent to the motion of a particle of unit mass in the potential well parameterized by the scale...
(0.6849) Note that this additional power law term related to inter- action can also be interpreted as the Cardassian or poly- tropic term [49,50] (one can easily show that the assumed form of the interaction always generates a correction of type am, m = 1 − n, in the potential of...