May 16 – 17, 2019
University of Warsaw
Europe/Zurich timezone

Inflationary correlators from the stochastic spectral expansion

May 17, 2019, 11:15 AM



Mr Tommi Markkanen


Continuing on the topic of the stochastic formalism, in this talk I will present the lesser known stochastic spectral expansion and show how it can be used to calculate correlation functions generated during inflation. I also discuss the shortcomings of some of the commonly used approximations and present the full stochastic calculation for the isocurvature spectrum of a decoupled spectator, which demonstrates that it is a viable candidate of dark matter, contrary to popular belief. arXiv:1904.11917 & arXiv:1811.02586

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