Xi-ming Chen, Yungui Gong, Emmanuel N. Saridakis
We investigate cosmological scenarios in which dark matter and dark energy
interact with a time-dependent phenomenological form. Starting from simple and
extending to more complicated ansatzes, we obtain analytical expressions for
the evolutions of the deceleration and the various density parameters. We find
that depending on the choices of the model parameters, in the far future the
universe can either result to a dark-energy domination, in which the late-time
acceleration is permanent, or to a dark-matter domination after passing through
a transient accelerating phase.
View original:
http://arxiv.org/abs/1111.6743
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