Events at Physics |
Events During the Week of March 29th through April 5th, 2020
Monday, March 30th, 2020
- No events scheduled
Tuesday, March 31st, 2020
- No events scheduled
Wednesday, April 1st, 2020
- Wisconsin Quantum Institute
- Chicago Quantum Exchange Seminar Series
- CANCELED: Jeff Thompson, Princeton
- Time: 11:00 am - 12:00 pm
- Place: 4274 Chamberlin
- Speaker: Jeff Thompson, Princeton University
- Host: Shimon Kolkowitz
Thursday, April 2nd, 2020
- No events scheduled
Friday, April 3rd, 2020
- Atomic Physics Seminar
- Virtual AMO Seminar Series
- Time: 2:00 pm - 3:00 pm
- Place: Zoom link will be available here:
- Speaker: Vladan Vuletic, MIT
- Abstract: Recently it has been proposed to search for particles outside the Standard Model (SM) in an intermediate mass range by means of precision isotope shift spectroscopy on narrow optical transitions. We perform such a measurement on two S → D transitions for five bosonic isotopes of Yb+ with an accuracy of ~ 300Hz, and observe a nonlinearity at the 3.3 σ level in the corresponding King plot. Such a nonlinearity can indicate physics beyond the SM, or higher-order effects within the SM. We identify the second-order field shift as the leading-order effect within the SM for Yb+. The observed nonlinearity pattern is consistent with both the second-order field shift, and with an unknown boson, but larger than expected from either source. In the future, more precise measurements on more transition available for Yb+ and Yb can be used to distinguish between effects within and outside the SM.
- Physics Department Colloquium
- CANCELLED: Scaling down the laws of thermodynamics
- Time: 3:30 pm
- Place: 2241 Chamberlin Hall
- Speaker: Christopher Jarzynski, University of Maryland
- Abstract: CANCELLED
- Host: Alex Levchenko