Now showing items 22-41 of 91

    • HAWC: A New Gamma-Ray Observatory to Probe Nature's Highest-Energy Accelerators 

      Westerhoff, Stefan (Georgia Institute of Technology, 2015-09-21)
      In March 2015, Mexico and the U.S. inaugurated a new high-energy gamma-ray observatory near Puebla, Mexico: the HAWC (High-Altitude Water Cherenkov) Observatory. Located at 4,100 meters altitude, HAWC is a large field-of-view ...
    • Hierarchical Self-Assembly in Liquid Crystals a Rich Menu of Basic Science and Technology from the Origin of Life to Trillion Dollar Markets 

      Clark, Noel (Georgia Institute of Technology, 2017-01-29)
      The study of liquid crystals occupies a central place in materials science, serving as a context for encountering and using a variety of exotic structural themes of molecular organization, particularly of soft matter. A ...
    • High Energy Time Domain Astronomy with Swift and Beyond 

      Hartmann, Dieter H. (Georgia Institute of Technology, 2016-10-03)
      The Swift Gamma-Ray Burst (GRB) Explorer was launched in 2004 with two objectives: 1) To precisely localize GRBs and promptly relay their positions to other observatories; and, 2) To characterize the GRB afterglow phase ...
    • Hofstadter's Butterfly in the Strongly Interacting Regime 

      Dean, Cory (Georgia Institute of Technology, 2015-03-23)
      In 1976, Douglas Hofstadter predicted that in the presence of both a strong magnetic field, and a spatially varying periodic potential, Bloch electrons confined to a 2D quantum well exhibit a self-similar fractal energy ...
    • How Do Chipper, Kobe, Serena and Rory Do It? What Physics Has to Say About Achievements in Sports 

      Can, Cüneyt (Georgia Institute of Technology, 2013-01-28)
      A great part of physics deals with motion, and the essence of sports is the human body in motion. The components of the human body that produce motion, namely the skeletal muscles and bones, and the sports equipment itself ...
    • How Materials Can Learn to Function 

      Liu, Andrea J. (Georgia Institute of Technology, 2021-03-29)
      How does learning occur? In the context of neural networks, learning occurs via optimization, where a loss function is minimized to achieve the desired result. But physical networks such as mechanical spring networks or ...
    • How Worms Wiggle 

      Samuel, Aravi (Georgia Institute of Technology, 2012-11-19)
      Directed locomotion requires coordinated motor activity throughout an animal’s body. The nematode C. elegans, with only 302 neurons, offers an opportunity to understand how locomotion is organized by an entire motor system. ...
    • Hydrodynamics and Quantum Anomalies 

      Son, Dam Thanh (Georgia Institute of Technology, 2014-09-15)
      Hydrodynamics is the theory describing collective behaviors of fluids and gases. It has a very long history and is usually considered to belong to the realm of classical physics. In recent years, it has been found that, ...
    • 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 ...