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