Condensed Matter Seminar: TOPOLOGICAL STATES in MAGNETIC PYROCHLORE IRIDATES
Jak Chakhalian (Rutgers University)
Zoom Link: https://upenn.zoom.us/j/91062037833?pwd=aHp1WGZIcjBxRFRLNlRkbnNsaUREZz09
High Energy Theory Seminar: "TBA"
Alberto Nicolis (Columbia University)
High Energy Theory Seminar: "The Callan Rubakov Effect"
T. Daniel Brennan (University of California San Diego)
The Callan Rubakov Effect describes the interaction between (massless) fermions and a smooth monopole in 4d gauge theory. In this scenario, the fermions can probe the UV physics inside the monopole core which leads…
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…