Classicality of Stochasti
Classicality of Stochastic Noise Away From Quasi-de Sitter Inflation
Classicality of Stochastic Noise Away From Quasi-de Sitter Inflation
It is well known that a coarse-grained scalar field living on a de~Sitter (dS) background exhibits classical stochastic behavior, driven by a noise whose amplitude is set by the Hubble constant $H$. The coarse-graining is achieved by discarding wave numbers larger than a cutoff $σa H$ and demanding …