Stochastic inflation and replica field theory

@article{Kuhnel2009StochasticIA,
  title={Stochastic inflation and replica field theory},
  author={F. Kuhnel and D. Schwarz},
  journal={Physical Review D},
  year={2009},
  volume={79},
  pages={044009}
}
  • F. Kuhnel, D. Schwarz
  • Published 2009
  • Physics
  • Physical Review D
  • We adopt methods from statistical field theory to stochastic inflation. For the example of a free test field in de Sitter and power-law inflation, the power spectrum of long-wavelength fluctuations is computed. We study its dependence on the shape of the filter that separates long- from short-wavelength modes. While for filters with infinite support the phenomenon of dimensional reductions is found on large superhorizon scales, filters with compact support return a scale-invariant power… CONTINUE READING
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