, University of Virginia
[Host: PQ Hung]
Dark energy, responsible for the apparent acceleration of the Universe, is typically considered to be represented by a cosmological constant. However, according to the latest results from WMAP 9 and Planck, the measured 2-sigma range for the equation-of-state parameter lies below -1, which is indicative of a dark energy density that increases over time, i.e., phantom dark energy. I discuss the full categorization of dark energy models with monotonically increasing dark energy densities, introducing two new categories described by what we have dubbed the "little rip" and the "pseudo-rip." I present example parameterizations for each type and discuss the implications for bound structures and the Universe itself in the future.
High Energy Physics Seminar
Wednesday, November 6, 2013
Physics Building, Room 204
Note special room.
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