PIRSA:09070010 Conference Quantum Fields and Strings Particle Physics Cosmology

DOI10.48660/09070010

Conference/School: Holographic Cosmology Workshop - 2009

Rajantie, A. (2009). Non-Gaussianity from non-equilibrium physics. Perimeter Institute. https://pirsa.org/09070010

Rajantie, Arttu. Non-Gaussianity from non-equilibrium physics. Perimeter Institute, Jul. 21, 2009, https://pirsa.org/09070010 

@misc{ pirsa_PIRSA:09070010,
  doi = {10.48660/09070010},
  url = {https://pirsa.org/09070010},
  author = {Rajantie, Arttu},
  keywords = {Quantum Fields and Strings, Particle Physics, Cosmology},
  language = {en},
  title = {Non-Gaussianity from non-equilibrium physics},
  publisher = {Perimeter Institute},
  year = {2009},
  month = {jul},
  note = {PIRSA:09070010 see, \url{https://pirsa.org}}
}

Abstract

Non-equilibrium processes such as inflationary preheating or the ekpyrotic bounce can turn fluctuations of light scalar fields into potentially highly non-Gaussian curvature perturbations. I show how these perturbations can be calculated at fully non-linear level using lattice field theory simulations. As concrete examples, I present results for preheating in chaotic inflation and resonant curvaton decay.

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