Events Daily

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.

Link to the Event Video

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.

Link to the Event Video

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: