Now showing items 30-49 of 91

    • In Pursuit of Dark Matter: Recent Results from the SuperCDMS Experiment 

      Cooley, Jodi (Georgia Institute of Technology, 2014-10-27)
      The existence of dark matter was first postulated by Jan Oort in1932 to account for the orbital velocities of stars in the Milky Way. Since that time, astrophysicists and astronomers have produced compelling evidence ...
    • Ion and Nanodrop Injection from Taylor Cones into Gases and Liquids 

      Fernandez de la Mora, Juan (Georgia Institute of Technology, 2012-01-30)
      When sufficiently charged, the interface between a conducting liquid and an insulator (vacuum, gas, liquid) becomes unstable and forms sharp conical tips (Taylor cones) which inject liquid into the insulator. This injection ...
    • Ion Hydration and Effective Charge 

      Pincus, Philip A. (Georgia Institute of Technology, 2018-03-26)
      Ions in water are typically understood to be hydrated, i.e. the appropriate water dipolar orientations point toward the charge (which is here taken to be of spherical symmetry). Depending on the specific charge, these ...
    • Life in the Universe 

      Loeb, Abraham (Avi) (Georgia Institute of Technology, 2018-03-12)
      Is life most likely to emerge at the present cosmic time around a star like the Sun? Loeb will review the habitability throughout cosmic history from the birth of the first stars 30 million years after the Big Bang to the ...
    • Local temperature Ansatz: A novel quantum entanglement based approach for solving strongly correlated systems 

      Vaezi, Abolhassan (Georgia Institute of Technology, 2018-02-05)
      The exact solution to interacting quantum problems is, in general, an exponentially hard task due to the exponential growth of the Hilbert space with the system size. As a result, despite extensive research during the past ...
    • Loop Quantum Gravity: A Bird’s Eye View 

      Ashtekar, Abhay (Georgia Institute of Technology, 2017-11-13)
      After a brief overview of quantum gravity as a whole, Dr. Ashtekar will explain the basics of Loop Quantum Gravity and its applications to some long standing questions: the nature of the very early universe and the ultimate ...
    • Machine Learning for Partial Differential Equations 

      Brenner, Michael P. (Georgia Institute of Technology, 2020-11-16)
      When Newton's laws are applied in every point in space we arrive at a set of nonlinear partial differential equations describing the world. We often marvel at the complexity of the solutions, but we know very well that ...
    • Many-body Entanglement and Tensor Networks 

      Evenbly, Glen (Georgia Institute of Technology, 2018-02-12)
      Quantum many-body systems are difficult to study because the space of possible many-body states is huge: its dimension grows exponentially in the system size. However, in recent years progress in our understanding of quantum ...
    • Measuring Everything You've Always Wanted to Know About a Laser Pulse 

      Trebino, Rick (Georgia Institute of Technology, 2011-09-07)
      Measuring an event in time seems to require a shorter one. As a result, the development of a technique for measuring ultrashort laser pulses "the shortest events ever created” has been particularly difficult. We have, ...
    • Mechanics Matters … for Biological Processes on the Nanoscale 

      Meiners, Jens-Christian (Georgia Institute of Technology, 2011-11-16)
      A cell is not just a small test tube in which biochemical reactions take place, but it also has a complex and highly dynamic mechanical structure. I will discuss the underlying physical principles that govern cellular ...
    • A Mind Over Matter: The Life and Science of Philip W. Anderson 

      Zangwill, Andrew (Georgia Institute of Technology, 2020-10-12)
      Dr. Zangwill presents a biographical survey of the life and science of Nobel Laureate Philip W. Anderson, arguably the most productive and influential theoretical physicist of the second half of the twentieth century. He ...
    • Networks of Neurons Create Complex Dynamics: Statistical Physics and a Simple Model for the Control of Breathing 

      Levine, Alex (Georgia Institute of Technology, 2011-11-02)
      “Cogito ergo sum.” In the physical sciences, there is a long history of thinking about thinking, going back at least as far as René Descartes’ famous pronouncement. Much more recently, a combination of neuroscientists and ...
    • Neutrons as a unique tool for research 

      Tennant, Alan (Georgia Institute of Technology, 2017-08-28)
      Neutrons provide an essential and complementary probe of matter with unique sensitivity to light atoms and magnetic phenomena. As part of a Department of Energy initiative to define the future needs and impact of neutrons ...
    • New Exciting Approaches to Particle Scattering Amplitudes 

      Elvang, Henriette (Georgia Institute of Technology, 2011-09-28)
      Particle scattering processes at experiments such as the Large Hadron Collider at CERN are described by scattering amplitudes. In quantum field theory classes, students learn to calculate amplitudes using Feynman diagram ...
    • Nobel Prize in Chemistry 2011: Dan Shechtman and The discovery of quasicrystals 

      Berger, Claire (Georgia Institute of Technology, 2012-01-09)
      The Nobel prize in Chemistry 2011 was awarded to Dan Shechtman for his “Discovery of Quasicrystals”. This discovery published in a seminal paper in November 1984 [1] lead to the re-definition of crystalline structures. ...
    • Non-equilibrium Statistical Mechanics: a growing frontier of "pure and applied" theoretical physics 

      Zia, Royce K. P. (Georgia Institute of Technology, 2017-09-25)
      Founded over a century ago, statistical mechanics for systems in thermal equilibrium has been so successful that, nowadays, it forms part of our physics core curriculum. On the other hand, most of "real life" phenomena ...
    • The Nuclear Spectroscopic Telescope Array (NUSTAR) High-Energy X-Ray Mission: Bringing the High Energy Universe into Focus 

      Harrison, Fiona (Georgia Institute of Technology, 2014-09-08)
      The Nuclear Spectroscopic Telescope Array, the first focusing high-energy X-ray (3 – 79 keV) telescope in orbit, extends sensitive X-ray observations above the band pass where Chandra and XMM-Newton operate. With an ...
    • Observation of Astrophysical Neutrinos by IceCube 

      Taboada, Ignacio (Georgia Institute of Technology, 2013-09-16)
      Even though cosmic rays were discovered more than 100 years ago, their origin remains a mystery. Neutrinos, product of cosmic ray interactions at or near the production site, are the best astrophysical messenger to find ...
    • Observing the signature of a single prolific r-process event in an ultra-faint dwarf galaxy 

      Frebel, Anna (Georgia Institute of Technology, 2017-10-23)
      The heaviest chemical elements in the periodic table are synthesized through the rapid neutron-capture (r-) process but the astrophysical site where r-process nucleosynthesis occurs is still unknown. The best candidate ...
    • Optical Metamaterials: From Linear Responses to Nonlinear Interactions and Beyond 

      Cai, Wenshan (Georgia Institute of Technology, 2014-10-06)
      Metamaterials are commonly viewed as artificially-structured media capable of realizing arbitrary effective parameters, in which metals and dielectrics are delicately combined to facilitate the index contrast and plasmonic ...