We use cookies to ensure that we give you the best experience on our website. You can change your cookie settings at any time. Otherwise, we'll assume you're OK to continue.

Department of Mathematical Sciences

Seminar Archives

On this page you can find information about seminars in this and previous academic years, where available on the database.

Maths HEP Lunchtime Seminars: Is modified gravity responsible for the accelerating universe?

Presented by Damien Easson (Durham),

21 October 2005 00:00 in CM221

"I will begin with a brief introduction to the observational evidence for the accelerating Universe, dark energy and the cosmological constant problem. I will then discuss the possibility that this acceleration is caused by a low-energy modification to Einstein's General theory of Relativity. These modifications are in the form of inverse curvature invariants added to the usual Einstein-Hilbert action and dominate cosmological dynamics at late times. A special inverse curvature invariant constructed from the Riemann tensor is predicted by the classical limit of a particular model of quantum gravity. I will focus on the difficulties of constructing viable low energy deformations of General Relativity, both from a theoretical and observational standpoint. "

Contact or for more information