PIRSA:09050058 Conference Cosmology

DOI10.48660/09050058

Conference/School: Effective Field Theories in Inflation - 2009

Trott, M. (2009). Power Counting vs Higgs Inflation. Perimeter Institute. https://pirsa.org/09050058

Trott, Michael. Power Counting vs Higgs Inflation. Perimeter Institute, May. 21, 2009, https://pirsa.org/09050058 

@misc{ pirsa_PIRSA:09050058,
  doi = {10.48660/09050058},
  url = {https://pirsa.org/09050058},
  author = {Trott, Michael},
  keywords = {Cosmology},
  language = {en},
  title = {Power Counting vs Higgs Inflation},
  publisher = {Perimeter Institute},
  year = {2009},
  month = {may},
  note = {PIRSA:09050058 see, \url{https://pirsa.org}}
}

Abstract

We use the power-counting formalism of effective field  theory to study the size of loop corrections in theories of slow-roll inflation, with the aim of more precisely identifying the limits of validity of the usual classical inflationary treatments. Although most slow-roll models lie within the semiclassical domain, we find the consistency of the Higgs-Inflaton scenario to be more delicate due to the proximity between the Hubble scale during inflation and the upper bound allowed by unitarity on the new-physics scale.

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