Ohio State Department of Physics

HEP/Astro Seminar - Wednesday, 12 February 2003

Understanding the Properties of Dark Energy in the Universe

Dr. Dragan Huterer (Case Western)


Recent direct evidence from type Ia supernovae and indirect evidence from other cosmological measurements imply the existence of dark energy -- a smooth component that makes the expansion of the universe accelerate and which makes up about 70% of its energy density. Dark energy is very mysterious; its nature and its properties are poorly understood. In this talk I review the conundrums that dark energy presents to particle physics. I further address the methods to constrain the properties of dark energy using present and future cosmological probes, such as measurements of the distance-redshift relation, cosmic microwave background measurements, and large-scale structure surveys. I also discuss more general ways to characterize the evolution of the universe, and therefore test alternative dark-energy models, between redshift of zero and 1010.

15:30, Smith Lab 4079

Last updated 15 January 2003, Matthew Wingate

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