Physics & Astronomy Colloquium

Dr. Kate Scholberg, Duke University

Title: How to Spot a Supernova from Deep Underground

Abstract: Stellar core collapses create enormous bursts of tens-of-MeV neutrinos on a timescale of a few tens of seconds after collapse and preceding optical fireworks by hours or days.  These neutrinos can be observed in underground neutrino detectors worldwide.  The neutrinos themselves carry directional information that can be exploited to determine the position of the supernova (or of the compact remnant, in the case of failed explosion) on the sky.  I will give an overview of methods for low-latency pointing to core-collapse events with neutrino detectors.

Date:
-
Location:
CP 153
Event Series:

Condensed Matter Seminar

Title: Quantum Twisting Microscopy of Moiré Flat Bands: A Theoretical Perspective

Abstract: Moiré materials with tunable flat bands provide an exceptional platform for realizing strongly correlated and topological phases. Achieving a detailed understanding of their electronic structure, however, remains a major challenge. The recently developed quantum twisting microscope introduces a new tunneling probe for van der Waals materials. In this talk, I will present a theoretical framework for both elastic and inelastic tunneling spectroscopy of moiré flat bands using the quantum twisting microscope. I will discuss how this technique can enable momentum-resolved measurements of electronic spectral functions, neutral collective excitations and superconducting gap structures in magic-angle twisted bilayer graphene.

Date:
-
Location:
CP 179
Event Series:
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