Aethereal Gravity


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


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


          @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}}

Brendan Foster Utrecht University


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.