High Energy Theory Seminar: "Newman-Penrose and BMS Charges Near Null Infinity"
Chris Pope, Texas A&M University
In 1965 Newman and Penrose (NP) showed that any asymptotically-flat spacetime admits 10 quantities, obtained as certain spherical-harmonic projections of a particular component of the Weyl tensor, which are exactly…
High Energy Theory Seminar: "Black Hole Microstate Cosmology"
Brian Swingle, University of Maryland, College Park
I will discuss the possibility that certain high-energy holographic CFT states correspond to black hole microstates with a geometrical behind-the-horizon region, modelled by a portion of a second asymptotic region…
Special Seminar: "This Is Not A Diversity Talk" - POSTPONED MAKE UP DATE TBD
John A. Johnson, The Harvard-Smithsonian Center for Astrophysics
The American discourse on the various disparities present in society generally, and academia specifically, focuses primarily on observations of the state of a given situation---e.g. a lack of …
Condensed Matter Seminar: "Terahertz-frequency light fields driving quantum material electrons, ions, and spins"
Keith Nelson, Massachusetts Institute of Technology
Terahertz-frequency light pulses can now be generated routinely with field amplitudes sufficient to drive highly nonlinear responses of materials and molecules.
Astronomy seminar: "Measurements of Degree-Scale B-mode Polarization with the BICEP/Keck Experiments at South Pole"
Benjamin Racine, Harvard-Smithsonian Center for Astrophysics
The BICEP and Keck experiments, located at the South Pole, are currently observing the polarized microwave sky at the degree scale using refractive telescopes. They are searching for a signature of primordial…
Condensed Matter Seminar: "Adhering, wrapping, and bursting of fluid membranes: understanding effects of membrane-binding particles and polymers"
Anthony (Tony) Dinsmore, University of Massachusetts, Amherst
Proteins and membranes form remarkably complex structures that are key to intracellular compartmentalization, cargo transport, and cell morphology. Despite this wealth of examples in living systems, we still lack…
Astronomy seminar: "TBA"
Barth Netterfield, University of Toronto
Security and Donuts (and 2-Step enrollment)
Nick Salvatore, Chris Lake, and Shaheen Beg
In observance of National CyberSecurity Awareness Month, Nick Salvatore, Chris Lake, and Shaheen Beg will be hosting an Information Security Outreach day next week. If you need help with setting up 2-Step…
Experimental Particle Physics Seminar: "Recent results from T2K"
Alysia Marino, University of Colorado