PIRSA:11070021 Conference Cosmology

DOI10.48660/11070021

Conference/School: Challenges for Early Universe Cosmology - 2011

(2011). A Simple Harmonic Universe. Perimeter Institute. https://pirsa.org/11070021

A Simple Harmonic Universe. Perimeter Institute, Jul. 15, 2011, https://pirsa.org/11070021 

@misc{ pirsa_PIRSA:11070021,
  doi = {10.48660/11070021},
  url = {https://pirsa.org/11070021},
  author = {},
  keywords = {Cosmology},
  language = {en},
  title = {A Simple Harmonic Universe},
  publisher = {Perimeter Institute},
  year = {2011},
  month = {jul},
  note = {PIRSA:11070021 see, \url{https://pirsa.org}}
}

Abstract

We explore simple but novel solutions of general relativity which, classically, approximate cosmologies cycling through an infinite set of ``bounces." These solutions require curvature K=+1, and are supported by a negative cosmological term and matter with -1 < w < -1/3. They can be studied within the regime of validity of general relativity. We argue that quantum mechanically, particle production leads eventually to a departure from the regime of validity of semiclassical general relativity, likely yielding a singular crunch.

Resources

Next talk

Related Talks