Stochastic inflation and replica field theory

F. Kuhnel; D. Schwarz

DOI:10.1103/PhysRevD.79.044009

Corpus ID: 119215709

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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