Primordial gravitational waves from the space-condensate inflation model
  We consider the space-condensate inflation model to study the primordial
gravitational waves generated in the early Universe. We calculate the energy
spectrum of gravitational waves induced by the space-condensate inflation model
for full frequency range with assumption that the phase transition between two
consecutive regimes to be abrupt during evolution of the Universe. The
suppression of energy spectrum is found in our model for the decreasing
frequency of gravitational waves depending on the model parameter. To realize
the suppression of energy spectrum of the primordial gravitational waves, we
study an existence of the early phase transition during inflation for the
space-condensate inflation model.
