Tuesday, March 23, 2010, 3:30 pm — Large Seminar Room, Bldg. 510
The Standard Model of the Universe explains a broad set of independent
observations: CMB anisotropies, large scale structure of the Universe, baryon acoustic oscillations, light elements abundances, acceleration of the Universe today and further observations.
This LambdaCDM model of the Universe starts by an accelerated expansion
(inflation) followed by the hot big bang and it is dominated today by dark energy and dark matter (DM). The present observational and theoretical status of the Universe will be reviewed. Inflation can be treated as an effective field theory `a la Ginsburg-Landau.
Combining theory with observations we predict primordial gravitons with a ratio of tensor to scalar fluctuations r = 0.05 and a double-well potential for the inflaton. We combine detailed galaxy observations with the theoretical evolution of the Universe since the inflationary era and find that the DM particle mass must be in the keV scale as well as that galaxies possess cored density profiles.
Hosted by: Rob Pisarski
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