Late evolution of relic gravitational waves in coupled dark energy
  models
  In this paper we study the late evolution of Relic Gravitational Waves in
coupled dark energy models, where dark energy interacts with cold dark matter.
Relic Gravitational Waves are second tensorial order perturbations of the
Lemaitre-Friedman-Robertson-Walker metric and experiment an evolution ruled by
the scale factor of the metric. We and that the amplitude of Relic
Gravitational Waves is smaller in coupled dark energy models than in models
with non interacting dark energy . We also find that the amplitude of the waves
predicted by the models with coupling term proportional to the dark energy
density is smaller than those of the models with coupling term proportional to
dark matter density.
