PIRSA:16090043

Surprising consequence of a positive cosmological constant

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}}
          }

Beatrice Bonga

Radboud Universiteit Nijmegen

Talk number
PIRSA:16090043
Collection
Talk Type
Subject
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.