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Apr 26, 2024
8:00 PM - 10:00 PM
Public Observing Night Please join the University of Iowa Physics & Astronomy Department as we use the Van Allen Observatory and small telescopes to tour the spring sky. To attend this Astronomy observation session, follow the signs in Van Allen Hall to reach the roof (access is on the 7th floor, east end). The most convenient elevator to use is the East elevator, which is on the far end of the building from the main N. Dubuque Street entrance. For this Public Observing Night, we will al...
Apr 29, 2024
1:30 PM - 2:30 PM
Scattering Model of Cold Electrostatic Waves in a Dipole Magnetic Field Patrick Langer; University of Iowa A 1-D integral equation is formulated from cold plasma theory to describe the scattering of ion acoustic waves incident on the center of a dipole magnet. This integral equation is solved numerically via the Nyström method. An analysis of the effects on the frequency spectrum is provided, including the time of flight of the wave as well as the structure of the wave cutoff for varying m...
Apr 29, 2024
2:30 PM - 3:30 PM
Virtual Event
Machine learning-based reconstruction in pixelated liquid argon time projection chambers Orgho Neogi; University of Iowa The Deep Underground Neutrino Experiment (DUNE) will address open issues in neutrino physics such as the measurement of the CP-violating phase in neutrino oscillations and the neutrino mass ordering. The 2x2 demonstrator is a single-phase liquid argon time projection chamber (LArTPC), with four modules, operated as a prototype for the DUNE Liquid Argon Near Detector (ND-...
Apr 30, 2024
1:30 PM - 2:30 PM
Virtual Event
Topic TBA Associate Professor Richard Baker; Department of Mathematics, University of Iowa
Apr 30, 2024
2:30 PM - 3:30 PM
Virtual Event
Why the chiral phase transition for three light flavors is so interesting Robert Pisarski, PhD; Department of Physics, Brookhaven National Laboratory In QCD, the eta prime meson is heavy because the breaking of the anomalous U_A(1) symmetry is large. A simple argument suggests that it should then be easy to see a first order chiral transition for light quarks. Nevertheless, numerical simulations on the lattice see no evidence for such a first order chiral transition. I suggest that this oc...
Apr 30, 2024
3:30 PM - 4:30 PM
Virtual Event
The Ugly Duckling and the Swan: the Quark-Gluon Plasma and heavy ion collisions Robert Pisarski, PhD; Department of Physics, Brookhaven National Laboratory I give a pedagogical and historical overview of the search for the Quark-Gluon plasma (QGP) in the collisions of heavy ions. I begin with a brief review of why we expect a QGP to be formed at high temperature. In this, numerical simulations in lattice Quantum ChromoDynamics (QCD) form the bedrock of the field. In particular, they demons...
May 1, 2024
4:00 PM - 5:00 PM
Examining the Optical Properties and Polaritons of Single-Crystal Gallium Nitride Aditya Desai; University of Iowa Wide-bandgap semiconductors have recently come into focus as a promising area of research for many applications, including power electronics and optoelectronics, and typically involve semiconductors that have band gaps of at least 3 eV, significantly larger than the 1.12 eV band gap of silicon. Notable examples of wide-bandgap semiconductors include hexagonal boron nitride, si...
May 7, 2024
1:30 PM - 2:30 PM
Virtual Event
Topic TBA Associate Professor Richard Baker; Department of Mathematics, University of Iowa