Infrared resummation for derivative interactions in de Sitter space

In de Sitter space, scale invariant fluctuations give rise to infrared logarithmic corrections to physical quantities, which eventually spoil perturbation theories. For models without derivative interactions, it has been known that the field equation reduces to a Langevin equation with white noise i...

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Veröffentlicht in:	Physical review. D 2019-07, Vol.100 (2), p.025020
1. Verfasser:	Kitamoto, Hiroyuki
Format:	Artikel
Sprache:	eng
Schlagworte:	Field theory Perturbation methods Quantum theory Variation White noise
Online-Zugang:	Volltext
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