KTH/Nordita/SU seminar in Theoretical Physics

Dark Energy vs. Dark Matter: Towards a unifying scalar field?

by Alexandre Arbey (Lyon)

FB52 ()


The Dark Matter and Dark Energy problems are presently two of the most important questions in cosmology. Many theoretical models try to determine the nature of these two components, however none of them has until now given a fully satisfying answer. In this seminar, I will present first the cosmological context of these questions. Then, I will describe a scalar field model able to explain at the same time indirect observations of dark matter and of dark energy, therefore enabling to unify both components into a unique dark fluid. Finally, I will consider quantum field theory to build an adequate potential for this scalar field.