Colloquium Speaker Lloyd Knox (UC Davis) today, Tuesday, February 25, 2014 at 4:00 PM

[Gutik, Martina]

Please take note of Colloquium taking place today, Tuesday, February 25, 2014 at 4:00 PM in The Robert Smith Seminar Room. There will be a reception in the Atrium at 3:45PM. Details concerning the talk are as follows:

Speaker:              Lloyd Knox  (UC Davis)
Date:                     Tuesday, February 25, 2014
Time:                     4:00 PM
Place:                    1080 Physics Research Building, The Robert Smith Seminar Room
Title:                     The Marvelous Success of the Standard Model of Cosmology

Abstract: The standard model of cosmology has been remarkably successful in its predictions for current data given earlier data. One can react with sadness for the lack of evidence for new physics, chase marginal anomalies, or marvel at the success and soldier on toward better measurements knowing new physics may be just around the corner. In this talk I will reveal some of the inner workings of this success in order to communicate why I find it marvelous. For example, for the predictions to agree with cosmic microwave background (CMB) data we need, at very high statistical significance, a cosmic neutrino background, electron-positron annihilation occurring after neutrino decoupling, primordial helium and gravitational lensing. Perhaps most marvelous of all, from CMB data we can now rule out a sum of neutrino masses greater than about 1 eV because of their gravitational influence on freely streaming CMB photons.
The website for the colloquium is https://physics.osu.edu/physics-colloquium-schedule.

Martina Gutik
The Ohio State University
1040 Physics Research Building
191 West Woodruff Avenue
Columbus, Ohio 43210-1117
Phone: 614-292-6083
E-mail gutik.1 at osu.edu<mailto:gutik.1 at osu.edu>

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