APA

Foster, B. (2006). Aethereal Gravity. Perimeter Institute. https://pirsa.org/06120033

MLA

Foster, Brendan. Aethereal Gravity. Perimeter Institute, Dec. 06, 2006, https://pirsa.org/06120033

BibTex

@misc{ pirsa_PIRSA:06120033,
  doi = {10.48660/06120033},
  url = {https://pirsa.org/06120033},
  author = {Foster, Brendan},
  keywords = {Quantum Gravity},
  language = {en},
  title = {Aethereal Gravity},
  publisher = {Perimeter Institute},
  year = {2006},
  month = {dec},
  note = {PIRSA:06120033 see, \url{https://pirsa.org}}
}
            

Abstract

Hints from quantum gravity suggest that a preferred frame may actually exist. One way to accommodate such a frame in general relativity without sacrificing diffeomorphism invariance is to couple the metric to a dynamical, time like, unit-norm vector field--the "aether". I will discuss properties and observational tests of a class of such theories, including post-Newtonian effects and radiation from binary pulsar systems.