# Events Archive

Ofer Firstenberg
Fri, Oct 22, 2010, 12:30 pm1:30 pm
Speaker: Ofer Firstenberg Affiliation: Technion-Israel Institute of Technology Title: Diffusion and Diffraction of Polaritons in Atomic Media Abstract: We investigate the non-local optical response in a medium of diffusing atoms. The two-photon spectra exhibit motional broadening and narrowing features along with a cusp-like or…
Victor Acosta
Tue, Oct 19, 2010, 2:00 pm3:30 pm
Speaker: Victor Acosta Affiliation: Berkeley Title: Broadband, picotesla-scale magnetometry with diamond NV centers Abstract: TBA

[TESTING BY SSG] Marc Smiciklas, "A Determination of $\alpha$ Using Precision Measurements of Helium Fine Structure"
Tue, Aug 10, 2010, 3:30 pm4:00 pm
Recently published theoretical predictions by Pachucki and Yerokhin are in good agreement with the most precise measurements of helium fine structure and, for the first time, represent a complete calculation up to and including terms of order $\alpha^7$. In addition to serving as a test of this theory, more precise measurements could also yield…
A Determination of the Fine Structure Constant Using Precision Measurements of Helium Fine Structure
Tue, Aug 10, 2010, 1:00 pm2:00 pm

Recently published theoretical predictions by Pachucki and Yerokhin are in good agreement with the most precise measurements of helium fine structure and, for the first time, represent a complete calculation up to and including terms of order mÎ±7. In addition to serving as a test of this theory, more precise measurements could also yield…