| Tuesday, September 12, 2023 |
| Challenges and Opportunities from gravitational waves: data scientists on diet | |
| Kaze Wong, CCA | |
| Event Type: Astro Seminar | |
| Time: 2:00 PM - 3:15 PM | |
| Location: 726 Broadway, 940, CCPP Seminar | |
| Abstract: The gravitational wave (GW) community has made numerous exciting discoveries in the past 7 years, from the first detection to a catalog of ~80 GW events, containing all sorts of surprises such as binary neutron stars and neutron star-black hole mergers. In the coming decade, there will be next-generation facilities such as the third-generation GW detectors network and space-based GW observatory, that will provide many more surprising events. There are quite a number of open modeling and data analysis problems in GW that await to be solved in order to unlock the full potential of next-generation detections. Despite the recent rapid development of machine learning and efforts trying to solve these problems in GW, it seems GW has a number of traits that make applying machine learning to GW difficult. In this talk, I will discuss a number of challenges and opportunities in GW, and some insights from GW on how we should apply modern techniques such as machine learning to physical science in general. | |
| RG flows on two-dimensional spherical defects | |
| Tom Shachar, Hebrew University | |
| Event Type: Informal HEP Talk | |
| Time: 3:30 PM - 4:45 PM | |
| Location: 726 Broadway, 940, CCPP Seminar | |
| Abstract: The irreversibility of RG flows on conformal defects has been a subject of great interest recently. In this talk I will present an entropy function defined on 2D spherical defects, interpolating between the defect anomaly coefficient at the fixed points. We reproduce the IR sum-rule proving irreversibility and show that the function is perturbatively monotonically decreasing. We consider an interesting example using self-adjoint extension, with a limiting case where the epsilon expansion breaks down. | |
| How to "See" a Black Hole? | |
| Calvin Chen | |
| Event Type: Cosmic Happy Hour | |
| Time: 8:00 PM - 9:30 PM | |
| Location: Book Club Bar, 197 East 3rd St. @ Ave. B | |
| Abstract: If black holes absorb all the light, then how do we "see" black holes? How did we take the "first picture" of a black hole in 2019? Join us as Calvin Chen gives us an introduction on how scientists have found interesting ways to observe a black hole, including seeing it bend light with its extreme gravity and watching it devour a companion star! Location: Book Club Bar, 197 East 3rd Street, New York, NY 10009 (b/w Aves. A & B) Tickets: https://www.eventbrite.com/e/cosmic-happy-hour-tickets-678913768357 | |