"Lukewarm Dark Matter: Cosmology of a Bose-Condensed Scalar Field," colloquium March 11, 2011
Andy Lundgren, Penn State
Our universe is much more than just what we see. On the scales of galaxies and larger, 90% of the mass is dark matter which doesn't interact with light or with normal matter. I will review the evidence for dark matter, and our current best understanding of cosmology from the Big Bang to the current day. I will then introduce a model for dark matter as a Bose-condensed scalar field with a realistic thermodynamic history that passes important cosmological tests and provides an interesting solution to some problems with the dark matter story.