Large-Scale Suppression from Stochastic Inflation

Details Large-Scale Suppression from Stochastic Inflation Large-Scale Suppression from Stochastic Inflation

2010-03-15

arxiv.org/abs/1003.3014v2

Phys.Rev.Lett.105:211302,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure; v2 minor changes to match published PRL version

Scientific paper

10.1103/PhysRevLett.105.211302

We show non-perturbatively that the power spectrum of a self-interacting scalar field in de Sitter space-time is strongly suppressed on large scales. The cut-off scale depends on the strength of the self-coupling, the number of e-folds of quasi-de Sitter evolution, and its expansion rate. As a consequence, the two-point correlation function of field fluctuations is free from infra-red divergencies.

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