PIRSA:16100068 Scientific Series Cosmology

DOI10.48660/16100068

Series: Cosmology and Gravitation

Munchmeyer, M. (2016). Prospects for cosmological collider physics. Perimeter Institute. https://pirsa.org/16100068

Munchmeyer, Moritz. Prospects for cosmological collider physics. Perimeter Institute, Oct. 25, 2016, https://pirsa.org/16100068 

@misc{ pirsa_PIRSA:16100068,
  doi = {10.48660/16100068},
  url = {https://pirsa.org/16100068},
  author = {Munchmeyer, Moritz},
  keywords = {Cosmology},
  language = {en},
  title = {Prospects for cosmological collider physics},
  publisher = {Perimeter Institute},
  year = {2016},
  month = {oct},
  note = {PIRSA:16100068 see, \url{https://pirsa.org}}
}

Abstract

If heavy fields are present during inflation, they can leave an imprint in late-time cosmological observables. The main signature of these fields is a small amount of distinctly shaped non-Gaussianity, which if detected, would provide a wealth of information about the particle spectrum of the inflationary Universe. Here we investigate to what extent these signatures can be detected or constrained using futuristic 21-cm surveys. This part of my talk is based on 1610.06559. In the second part of my talk I will discuss how non-adiabatic production of heavy particles, as recently studied in 1606.00513, can generate an interesting and so far unconstrained class of non-Gaussianity in the CMB.   

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