PIRSA:12090060 Scientific Series Cosmology

DOI10.48660/12090060

Series: Cosmology and Gravitation

Chluba, J. (2012). Spectral distortions of the CMB and what we might learn about early universe physics. Perimeter Institute. https://pirsa.org/12090060

Chluba, Jens. Spectral distortions of the CMB and what we might learn about early universe physics. Perimeter Institute, Sep. 11, 2012, https://pirsa.org/12090060 

@misc{ pirsa_PIRSA:12090060,
  doi = {10.48660/12090060},
  url = {https://pirsa.org/12090060},
  author = {Chluba, Jens},
  keywords = {Cosmology},
  language = {en},
  title = {Spectral distortions of the CMB and what we might learn about early universe physics},
  publisher = {Perimeter Institute},
  year = {2012},
  month = {sep},
  note = {PIRSA:12090060 see, \url{https://pirsa.org}}
}

Abstract

The spectrum of the cosmic microwave background (CMB) is known to be extremely close to a perfect blackbody. However, even within standard cosmology several processes occurring in the early Universe lead to distortions of the CMB at a level that might become observable in the future. This could open an exciting new window to early Universe physics. In my talk I will then explain in more detail why the cooling of matter in the early Universe causes a negative mu- and y-type distortion and how the damping of primordial small-scale perturbations before recombination could allow placing interesting constraints on different inflationary models.

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