Metric perturbations from quantum tunneling in open inflation.

  title={Metric perturbations from quantum tunneling in open inflation.},
  journal={Physical review. D, Particles and fields},
  volume={54 4},
We study the effect that quantum fluctuations produced during the nucleation of a single-bubble open inflationary universe have on the amplitude of temperature anisotropies in the microwave background. We compute the instanton action for the quantum tunneling between the false and true vacua in open inflation models and show that the amplitude of quantum fluctuations of the bubble wall is very sensitive to the gravitational effects of the true vacuum. We study the spectrum of quantum… CONTINUE READING