PIRSA:16030074 Scientific Series Cosmology

DOI10.48660/16030074

Series: Cosmology and Gravitation

Peloso, M. (2016). Dissipation during inflation. Perimeter Institute. https://pirsa.org/16030074

Peloso, Marco. Dissipation during inflation. Perimeter Institute, Mar. 15, 2016, https://pirsa.org/16030074 

@misc{ pirsa_PIRSA:16030074,
  doi = {10.48660/16030074},
  url = {https://pirsa.org/16030074},
  author = {Peloso, Marco},
  keywords = {Cosmology},
  language = {en},
  title = {Dissipation during inflation},
  publisher = {Perimeter Institute},
  year = {2016},
  month = {mar},
  note = {PIRSA:16030074 see, \url{https://pirsa.org}}
}

Abstract

I will discuss phenomena associated with particle production and field excitation during inflation. In the first part of the talk I will present several
signatures that can originate from the coupling of an axion inflaton to gauge fields. In the second part I will test the robustness of the standard
implications associated with the detection of a gravity wave (GW) signal at CMB scales, by discussing what conditions can allow a visible
sourced GW background that exceeds the vacuum one (without simultaneously overproduce scalar perturbations), and by providing a concrete
example. In the final part I will review the phenomenology of trapped inflation, which is an interesting and minimal mechanism where particle production
provides the main friction for the motion of the inflaton.

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