Condensed Matter Seminar: Roller-Coaster in a Flatland: Magnetoresistivity in Eu-intercalated Graphite
Dr. Sasha Chernyshev (University of California, Irvine)
Novel phenomena in magnetically-intercalated graphite has been a subject of much research in the 1980s, with the most enigmatic findings of that era being a dramatic, roller-coaster-like behavior of the…
Science on the Menu
Arnold Mathijssen, Assistant Professor of Physics
Penn Arts & Sciences is collaborating with…
Colloquium: Quantum Hall physics in a quantum Foucault pendulum
Richard Fletcher (MIT)
When charged particles are placed in a magnetic field, the single-particle energy states form discrete, highly-degenerate Landau levels. Since all states within a Landau level have the same energy,…
High Energy Theory Seminar: The Power of Lorentzian Wormholes
Jorritt Kruthoff (IAS)
As shown by Louko and Sorkin in 1995, topology change in Lorentzian signature involves spacetimes with singular points, which they called crotches. We modify their construction to obtain Lorentzian semiclassical…
Experimental Particle Physics Seminar: The mystery of cold noise in ATLAS upgrade silicon strip modules
Ian Dyckes (LBNL)
In preparation for the High Luminosity LHC, the ATLAS Experiment is constructing a new Inner Tracker (ITk) composed of silicon pixel and silicon strip detectors. After multiple years of prototyping, the ITk strips…
Condensed Matter Seminar: Cell motility and shape as a playground for physics
Brian Camley (Johns Hopkins University)
Cells crawl and reorganize in the body to perform their functions, ranging from white blood cells finding bacteria to skin cells closing over a wound. These behaviors provide huge opportunities for…
High Energy Theory Seminar: Probing dark matter with cosmic voids
Elena Pinetti (Fermi National Accelerator Laboratory)
In this talk, I will explain why cosmic voids are an interesting new target for dark matter searches. I will show that the expected signal-to-noise ratio resulting from decaying dark matter is significantly more…
Astrophysics Seminar: Looking at the sky with artificially intelligent eyes
Gautham Narayan (University of Illinois Urbana-Champaign)
Time-domain astrophysics is entering a golden age with discovery rates increasing exponentially thanks to combining public and private surveys such as the Young Supernova…
Condensed Matter Seminar: Quantum geometry in semiconductor heterostructures
Raquel Querioz (Columbia University)
Quantum geometry quantifies the momentum space textures of the Bloch wavefunctions and impacts substantially the physics of multiband systems. This is also true for van der Waals semiconductors, which are…
High Energy Theory Seminar: Light States across Field Space
Max Wiesner (Harvard University)
A common feature of theories of quantum gravity is the presence of light, massive states beyond those described by effective field theory. The species scale gives a measure for the number of such light states and…