Cosmological perturbations during the Bose-Einstein condensation of dark
  matter
  In the present work, we analyze the evolution of the scalar and tensorial
perturbations and the quantities relevant for the physical description of the
Universe, as the density contrast of the scalar perturbations and the
gravitational waves energy density during the Bose-Einstein condensation of
dark matter. The behavior of these parameters during the Bose-Einstein phase
transition of dark matter is analyzed in details. To study the cosmological
dynamics and evolution of scalar and tensorial perturbations in a Universe with
and without cosmological constant we use both analytical and numerical methods.
The Bose-Einstein phase transition modifies the evolution of gravitational
waves of cosmological origin, as well as the process of large-scale structure
formation.
