1 March 2019
Time: 2:30 - 3:30pm
Speaker: Tess Baker
Venue: GO Jones 610
Are the laws governing the behaviour of gravity over cosmological distance scales the same as those in the Solar System? Answering this question is a major focus of current cosmology, and may elucidate the nature of dark energy, which is believed to dominate the composition of the universe.
I’ll introduce the landscape of extended gravity theories that have been constructed as possible alternatives to General Relativity. I’ll explain their key features and the methods deployed to test the space of theoretical possibilities in an agnostic way. We’ll look at the current observational state of play of gravity, as informed by data from gravitational waves and the large-scale structure of the universe.