High Energy Theory Seminar: Making massive spin-2 particles from gravity during and after inflation
Andrew Long (Rice University)
The phenomenon of cosmological gravitational particle production (CGPP) occurs during and after inflation as quantum fields “feel” the cosmological expansion are excited out of their ground state. CGPP is a…
2024 Penn Grad Talks
NATURAL SCIENCES PRESENTATIONS
Doing Physics with Doodles
Steven Gassner, Physics and Astronomy
Planet X: Can Gravity Solve a Mystery of the Deep Solar…
Astrophysics Seminar: SPHEREx: An all-sky near-infrared spectral survey
Howard Hui (Caltech)
SPHEREx, an upcoming NASA medium-class Explorer Mission, will perform the first all-sky near infrared spectral survey. With a targeted launch date in early 2025, SPHEREx will map the entire sky at 6.2 arcsec from 0.…
High Energy Theory Seminar: Black Holes as the 21st century laboratory: New Tools and Prospects
Alfredo Guevara González (Harvard)
Recent breakthrough observations of black holes call for a new conceptual framework that unifies their analysis, from gravitational wave production to VLBI imaging of the photon ring. I will show how this is achieved…
Condensed and Living Matter Seminar: Orientational Order in Biological Development - Superfluid Shrimp
Mark Bowick (Kavli Institute for Theoretical Physics, UC Santa Barbara)
Morphogenesis, the process through which genes generate form, establishes tissue scale order as a template for constructing the complex shapes of the body plan. The extensive growth required to build…
Astrophysics Seminar: Synergies Between Imaging and Spectroscopic Surveys for Cosmology
Current and forthcoming sky surveys promise to deliver
datasets orders of magnitude better in quality and size than their
predecessors, but our ability to take advantage of these datasets is
…
Special Condensed & Living Matter Seminar: Mechanobiology in vivo and in 3D
Keng-hui Lin (Academia Sinica, Taiwan)
This talk will have two parts. The first part concerns the mechanical wave observed in the wound healing of zebrafish tailfin. Highly regenerative animals can regrow lost appendages and the rate of regrowth is…
Colloquium: Change Physics Culture Now
Jessica Esquivel (Fermilab)
This presentation will overview initiatives created to overcome inequity in physics. We will discuss grassroots efforts like Black in Physics, institution-adjacent efforts like Change-Now at Fermilab, and APS-funded…
High Energy Theory Seminar: Cornering axion(s) with direct detection and stellar probes
Edoardo Vitagliano (Hebrew U.)
Feebly interacting particles (FIPs), such as axions, scalars, dark photons, and majorons, are often theoretically well motivated, and a dark sector including one or more of them can both have the…