Canceled – A phenomenological approach to interacting vacuum in cosmology:a progress report
*This KMI Theory Seminar is canceled*
Speaker : Marco Bruni ( University of Portsmouth )
Title : A phenomenological approach to interacting vacuum in cosmology:a progress report
In this talk I will first describe a specific class of models for the
interaction of dark matter and dark energy. The dark energy component is a
w=-1 fluid representing vacuum, but due to the interaction with dark matter
this doesn’t correspond to a cosmological constant, i.e. it evolves in
space and time, modifying the background and the perturbations.
Nonetheless, for a specific subclass of interactions the dark matter is
geodesics, as in LCDM. Rather than focusing on a specific model, in the
second part of the talk I will descrive recent work where we try to
reconstruct the evolution in time of the interaction using current
cosmological data, drawing some conclusions.
Time : 15:00 – 16:00, March 10th (Tue.)
Place : ES635