PIRSA:09030037 Scientific Series Cosmology

DOI10.48660/09030037

Series: Cosmology and Gravitation

Wesley, D. (2009). Exploring extra dimensions with cosmic acceleration. Perimeter Institute. https://pirsa.org/09030037

Wesley, Daniel. Exploring extra dimensions with cosmic acceleration. Perimeter Institute, Mar. 18, 2009, https://pirsa.org/09030037 

@misc{ pirsa_PIRSA:09030037,
  doi = {10.48660/09030037},
  url = {https://pirsa.org/09030037},
  author = {Wesley, Daniel},
  keywords = {Cosmology},
  language = {en},
  title = {Exploring extra dimensions with cosmic acceleration},
  publisher = {Perimeter Institute},
  year = {2009},
  month = {mar},
  note = {PIRSA:09030037 see, \url{https://pirsa.org}}
}

Abstract

The standard cosmological model features two periods of accelerated expansion: an inflationary epoch at early times, and a dark energy dominated epoch at late times. These periods of accelerated expansion can lead to surprisingly strong constraints on models with extra dimensions. I will describe new mathematical results which enable one to reconstruct features of a higher-dimensional theory based on the behaviour of the accelerating four-dimensional cosmology. When applied to inflation, these results pose several interesting questions for the construction of concrete models. When applied to dark energy, they provide a new technique to combine measurements of dark energy parameters and constraints on variation of Newton's constant. This technique can transform near-future dark energy surveys into become powerful probes of extra dimensional physics.

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