Complex energies, quantum symmetries
New research from Washington University in St. Louis realizes one of the first parity time-symmetric quantum systems, allowing scientists to observe how that symmetry — and the breaking of it — leads to previously unexplored phenomena. These and future PT symmetry experiments have potential applications to quantum computing. The work from the laboratory of Kater Murch, associate professor of physics in Arts & Sciences, is published Oct. 7 in the journal Nature Physics.
Characterizing the ‘arrow of time’ in open quantum systems
Even in the strange world of open quantum systems, the arrow of time points steadily forward — most of the time. A video details new experiments conducted at Washington University in St. Louis that compare the forward and reverse trajectories of superconducting circuits called qubits, and find that they largely tend to follow the second law of thermodynamics. The research is published July 9 in the journal Physical Review Letters.
Water drives explosive eruptions; here’s why magmas are wetter than we thought
New research from Washington University in St. Louis provides compelling evidence that magmas may be wetter than once thought. The work led by experimental geochemists including Michael J. Krawczynski in Arts & Sciences is published in the July 2 issue of the journal American Mineralogist.
Center for Quantum Sensors tackles big questions
The university’s interdisciplinary Center for Quantum Sensors aims to harness the power of quantum mechanics to detect and decipher some of the universe’s greatest mysteries. The effort is timely as Congress recently approved a federal program supporting the development of quantum technologies.
‘Featherweight oxygen’ discovery opens window on nuclear symmetry
Researchers in Arts & Sciences have discovered and characterized a new form of oxygen dubbed “featherweight oxygen” — the lightest-ever version of the familiar chemical element oxygen, with only three neutrons to its eight protons.
The physics of baseball
David Peters, the McDonnell Douglas Professor of Engineering in the McKelvey School of Engineering at Washington University in St. Louis, has a body of work in applied aerodynamics and a host of academic honors, but he’s also a baseball fan. That’s why watching a baseball game takes on a whole new spin, aerodynamically speaking.
Energy, environment focus of 2019 McDonnell lecture
Richard Alley, the Evan Pugh Professor of Geosciences at Pennsylvania State University, will deliver the McDonnell Distinguished Lecture on March 6 at Washington University in St. Louis. Alley’s lecture is titled “Finding the Good News on Energy and Environment.”
Understanding tropical rainfall, both past and present
A recent study in Geophysical Research Letters proposes a new way to leverage signals contained in water molecules to decode the atmospheric processes that accompany changing tropical weather and climate patterns.
Cosmic ray telescope launches from Antarctica
Washington University in St. Louis announced that its SuperTIGER (Super Trans-Iron Galactic Element Recorder) instrument, which studies the origin of cosmic rays, successfully launched today from Williams Field at McMurdo Station in Antarctica.
What a deep dive into the deep blue sea is teaching us
Slow-motion collisions of tectonic plates under the ocean drag about three times more water down into the deep Earth than previously estimated, according to a first-of-its-kind seismic study that spans the Mariana Trench. The work has important implications for the global water cycle, according to Douglas A. Wiens in Arts & Sciences.
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