1302.6963 (Mustapha Azreg-Aïnou)

Numerical solutions to the cosmological 3-fluid problem    [PDF]

Mustapha Azreg-Aïnou

We show that, for the scalar field cosmology with exponential potential, the set of values of the coupling parameter for which the solutions undergo a transient period of acceleration is much larger than the set discussed in the literature. The gradual inclusion of ordinary and dark matters results in an everywhere, but near the origin, smoother and right shifted (along the time axis) acceleration curve. For the 3-fluid problem, the energy density need not exhibit a plateau during the acceleration period. Much excess in the dark matter and/or ordinary matter energy densities would lead the universe to undergo an eternal deceleration expansion.

View original: http://arxiv.org/abs/1302.6963