Veranstaltung

Vortrag
Cosmic acceleration and dark energy
Dr. Alan Rendall (AEI)
28.6.2005, 17:00 Uhr – 18:00 Uhr

It is less than ten years since the majority of astrophysicists became convinced that the expansion of our universe is accelerated. This requires some kind of repulsive force which overcomes the normal gravitational attraction. The cause of this has acquired a name, dark energy, but nobody knows what exactly dark energy is. Many models have been proposed and it is natural that one rich source of these is string theory. Questions about these models where mathematicians have a contribution to make are: what is the exact definition of the models, which of them are really different and what is the dynamics of the solutions of the field equations? In this talk, after presenting the necessary background on cosmology, I will cover some of these issues. In particular I will discuss k-essence models and the special case of the tachyon.

Verknüpft mit:

• Alan Rendall