PIRSA:16090043 Scientific Series Quantum Gravity

DOI10.48660/16090043

Series: Quantum Gravity

Bonga, B. (2016). Surprising consequence of a positive cosmological constant. Perimeter Institute. https://pirsa.org/16090043

Bonga, Beatrice. Surprising consequence of a positive cosmological constant. Perimeter Institute, Sep. 08, 2016, https://pirsa.org/16090043 

@misc{ pirsa_PIRSA:16090043,
  doi = {10.48660/16090043},
  url = {https://pirsa.org/16090043},
  author = {Bonga, Beatrice},
  keywords = {Quantum Gravity},
  language = {en},
  title = {Surprising consequence of a positive cosmological constant},
  publisher = {Perimeter Institute},
  year = {2016},
  month = {sep},
  note = {PIRSA:16090043 see, \url{https://pirsa.org}}
}

Abstract

The study of isolated systems has been vastly successful in the context of vanishing cosmological constant, $\Lambda = 0$. However, there is no physically useful notion of asymptotics for the universe we inhabit with $\Lambda > 0$. The full non-linear framework is still under development, but some interesting results at the linearized level have been obtained. I will focus on the conceptual subtleties that arise at the linearized level and discuss the quadrupole formula for gravitational radiation.

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