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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
Place: 4274 Chamberlin
Speaker: Jeff Thompson, Princeton University
Host: Shimon Kolkowitz
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Thursday, April 2nd, 2020

No events scheduled

Friday, April 3rd, 2020

Atomic Physics Seminar
Virtual AMO Seminar Series
Time: 2:00 pm
Place: Zoom link will be available here: https://sites.google.com/stanford.edu/virtual-amo-seminar/schedule
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.
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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
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