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Type of Event

Event Calendar

Tuesday, November 19, 2019

Tue, Nov 19, 2019

Photo of the outside of Valentine Dining Hall

Chinese Language Table

If you are interested in having more opportunities to speak Chinese, then join us twice a week for lunch! The Chinese Language Table is open to students, faculty and staff who would like to have conversations in Chinese. All levels are welcome.

Andrew A Geraci, Northwestern: “Hunting for Fifth-Forces and Dark Matter with AMO-Based Sensors”

We normally think of large accelerators and massive detectors when we consider the frontiers of elementary particle physics, pushing to understand the universe at higher and higher energy scales. However, several tabletop low-energy experiments are positioned to discover a wide range of new physics beyond the Standard model, where feeble interactions require precision measurements rather than high energies. In high vacuum, optically levitated dielectric nanospheres achieve excellent decoupling from their environment, making force sensing at the zeptonewton level (10-21 N) achievable.

In this talk, I will describe our progress towards using these sensors for tests of the Newtonian gravitational inverse square law at micron-length scales. Optically levitated dielectric objects and optical cavities show promise for a variety of other applications, including searches for gravitational waves and dark matter. Finally, I will discuss the Axion Resonant InterAction Detection Experiment (ARIADNE), a precision magnetometry experiment using laser-polarized 3-He gas to search for a notable dark-matter candidate: the QCD axion.

Pan and Bi Joy every other Tuesday. Second meeting on October 8th

Pan and Bi Joy (PB+J)

An inclusive, safe, and comforting environment for individuals centering those who identify with the bisexual and pansexual spectrum where people can talk about the intersectionality of their sexuality, their other identities, and other aspects of their lives.

Students Only

Philosophy Club

Friendly conversations and presentations on ethics, metaphysics, epistemology and other philosophical subjects.