Events Calendar View

• Departmental Colloquium Sep 29, 2022

  The New Wave of Quantum Magnetism

  

  Guest: Martin Mourigal, Associate Professor, School of Physics, Georgia Institute of Technology
  Thursday, September 29, 2022 3:55 pm - 4:55 pm
  Location: Physics Auditorium (202) and Zoom

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  Magnetism is a fascinating phenomenon with roots in the ancient world. Although its precise understanding calls for relativistic quantum mechanics and field theory, it is integral to everyday technologies. In magnetic insulators, electrons are closely bound to a crystal lattice and carry strongly interacting magnetic dipoles; as a result, phases of matter with no classical analogs are possible. Such quantum magnetic phases are of great fundamental interest as a testbed of our understanding of many-particle quantum mechanics. In the first part of this lecture, I will discuss some of the central ideas in quantum magnetism, from the Heisenberg model to the more recent concepts introduced by Kitaev and others. Then, I will explain our research program to search for these simple models in bulk materials and understand their properties using neutron spectroscopy.

• CSP Lunch Seminar Oct 4, 2022

  Langevin Dynamics/Monte Carlo Simulations of Moire Bilayers, pt. 2

  

  Guest: Steven Hancock, Center for Simulational Physics, University of Georgia
  Tuesday, October 4, 2022 12:45 pm - 1:45 pm
  Location: Zoom Meeting

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• Departmental Colloquium Oct 6, 2022

  Nanophotonics for enhanced sensing and spectroscopy: towards point-of-care devices

  

  Guest: Dr. Andreas Tittl, Emmy Noether Group Leader, Chair in Hybrid Nanosystems, Nanoinstitute Munich, Ludwig-Maximilians-University Munich, Germany
  Thursday, October 6, 2022 3:55 pm - 4:55 pm
  Location: Zoom Meeting

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  Nanotechnology and specifically nanophotonics have been at the forefront of biosensor development because they promise the integration of bulky analytical equipment into ultrasmall footprints. This size reduction makes nanophotonic approaches ideal for transitioning traditional sensing and spectroscopy concepts towards the point-of-care, enabling the delivery of rapid diagnostic results, and contributing to improved patient outcomes. In my talk, I will introduce several examples of such nanophotonics-based sensors and highlight how they can provide conceptual advances and improved performance for biomedical detection, covering a wide range of applications from lipid membrane and vesicular processes to the identification of antibodies and biomarkers for disease.

• CSP Lunch Seminar Oct 11, 2022

  On the First Law of Thermodynamics in Time-Dependent Open Quantum Systems

  

  Guest: Parth Kumar, Department of Physics, University of Arizona
  Tuesday, October 11, 2022 12:45 pm - 1:45 pm
  Location: Zoom Meeting

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• Departmental Colloquium Oct 13, 2022

  Entanglement area law in superfluid helium

  

  Guest: Adrian Del Maestro, Professor and Head Department of Physics & Astronomy University of Tennessee
  Thursday, October 13, 2022 3:55 pm - 4:55 pm
  Location: Physics Auditorium (202) and Zoom

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  Area laws were first discovered by Bekenstein and Hawking, who found that the entropy of a black hole grows proportional to its surface area, and not its volume. Entropy area laws have since become a fundamental part of modern physics, from the holographic principle in quantum gravity to ground state wavefunctions of quantum matter, where entanglement entropy is generically found to obey area law scaling. As no experiments are currently capable of directly probing the entanglement area law in naturally occurring many-body systems, evidence of its existence is based on studies of simplified theories. Using new exact microscopic ground state Monte Carlo simulations of superfluid helium, we demonstrate for the first time area law scaling of entanglement entropy in a real quantum liquid in three dimensions. We validate the fundamental principles underlying its physical origin, and explore an "entanglement equation of state" showing how it depends on the density of the superfluid.

• CSP Lunch Seminar Oct 18, 2022

  Simulating the evolution of dust particles in planet-forming discs

  

  Guest: Richard Booth, Imperial College London
  Tuesday, October 18, 2022 12:45 pm - 1:45 pm
  Location: Zoom Meeting

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