Interacting dark energy and transient accelerated expansion
  We argue that interactions in the dark sector may have a crucial impact on
the cosmological dynamics. In particular, the future cosmic evolution may be
very different from that predicted by the LCDM model. An example is a scenario
in which the currently observed accelerated expansion is an interaction-induced
transient phenomenon. We discuss such type of behavior on the basis of a
two-fluid toy model.
