• Corpus ID: 18577294

Amplification of Vacuum Fluctuations in String Cosmology Backgrounds

  title={Amplification of Vacuum Fluctuations in String Cosmology Backgrounds},
  author={M. Gasperini},
  journal={arXiv: High Energy Physics - Theory},
  • M. Gasperini
  • Published 21 June 1995
  • Physics
  • arXiv: High Energy Physics - Theory
Inflationary string cosmology backgrounds can amplify perturbations in a more efficient way than conventional inflationary backgrounds, because the perturbation amplitude may grow - instead of being constant - outside the horizon. If not gauged away, the growing mode can limit the range of validity of a linearized description of perturbations. Even in the restricted linear range, however, this enhanced amplification may lead to phenomenological consequences unexpected in the context of the… 

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