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Physics News

  • A Bose-Einstein condensate has been produced in space for the first time

    An international team of researchers has successfully produced a Bose-Einstein condensate (BEC) in space for the first time. In their paper published in the journal Nature, the group describes creating a small experimental device that was carried on a rocket into space and the experiments that were conducted during its freefall.
    Thu, 18 Oct 2018 08:30:03 EDT
  • Bursting the clouds for better communication

    We live in an age of long-range information transmitted either by underground optical fibre or by radio satellites. But the throughput today is so great that radio frequency is no longer enough in itself. Research is turning toward the use of lasers which, although technically complex, have several advantages, especially when it comes to security. However, this new technology, currently in the testing phase, faces a major problem: clouds. Due to their density, clouds stop the laser beams and scramble the transfer of information. Researchers at the University of Geneva (UNIGE), Switzerland, have devised an ultra-hot laser that creates a temporary hole in the cloud, which lets the laser beam containing the information pass through. They have published their results in the journal Optica.
    Thu, 18 Oct 2018 08:15:46 EDT
  • Study supports Standard Model of particle physics, excludes alternative models

    In a new study, researchers at Northwestern, Harvard and Yale universities examined the shape of an electron's charge with unprecedented precision to confirm that it is perfectly spherical. A slightly squashed charge could have indicated unknown, hard-to-detect heavy particles in the electron's presence, a discovery that could have upended the global physics community.
    Wed, 17 Oct 2018 13:00:02 EDT
  • Physicists create guidelines for non-equilibrium measurements of many-body systems

    When it comes to non-equilibrium physics, not all assumptions are created equal. At least, those are the latest findings from NC State physicist Lex Kemper and colleagues from NC State and Georgetown University.
    Wed, 17 Oct 2018 09:40:03 EDT
  • Acrylic tanks provide clear window into dark matter detection

    Scientists have a new window into the search for dark matter – an acrylic vessel that features a grouping of 12-foot-tall transparent tanks with 1-inch-thick walls.
    Wed, 17 Oct 2018 09:20:01 EDT
  • Physicist describes the shape of a wormhole

    A RUDN physicist demonstrated how to describe the shape of any symmetrical wormhole—a black hole that theoretically can be a kind of a portal between any two points in space and time—based on its wave spectrum. The research would help understand the physics of wormholes and better identify their physical characteristics. The article was published in the Physics Letters B journal.
    Wed, 17 Oct 2018 08:40:02 EDT
  • New memristor boosts accuracy and efficiency for neural networks on an atomic scale

    Just like their biological counterparts, hardware that mimics the neural circuitry of the brain requires building blocks that can adjust how they synapse, with some connections strengthening at the expense of others. One such approach, called memristors, uses current resistance to store this information. New work looks to overcome reliability issues in these devices by scaling memristors to the atomic level.
    Tue, 16 Oct 2018 11:00:09 EDT
  • New reservoir computer marks first-ever microelectromechanical neural network application

    As artificial intelligence has become increasingly sophisticated, it has inspired renewed efforts to develop computers whose physical architecture mimics the human brain. One approach, called reservoir computing, allows hardware devices to achieve the higher-dimension calculations required by emerging artificial intelligence. One new device highlights the potential of extremely small mechanical systems to achieve these calculations.
    Tue, 16 Oct 2018 11:00:07 EDT
  • Fermilab scientists to look for dark matter using quantum technology

    Fermilab scientists are harnessing quantum technology in the search for dark matter.
    Tue, 16 Oct 2018 09:03:00 EDT
  • Scientists discover new properties of uranium compounds

    Scientists from Russia, China and the United States predicted and have now experimentally identified new uranium hydrides, predicting superconductivity for some of them. The results of their study were published in Science Advances.
    Tue, 16 Oct 2018 08:11:13 EDT
  • The state of the early universe: The beginning was fluid

    Scientists from the Niels Bohr Institute, University of Copenhagen, and their colleagues from the international ALICE collaboration recently collided xenon nuclei in the superconducting Large Hadron Collider in order to gain new insights into the properties of the quark-gluon plasma (QGP). The QGP is a special state consisting of quarks and the gluons that bind the quarks together. The results were published in Physics Letters B.
    Tue, 16 Oct 2018 06:54:05 EDT
  • Physics: Not everything is where it seems to be

    Scientists at TU Wien, the University of Innsbruck and the ÖAW have for the first time demonstrated a wave effect that can lead to measurement errors in the optical position estimation of objects. The work now published in Nature Physics could have consequences for optical microscopy and optical astronomy, but could also play a role in position measurements using sound, radar, or gravitational waves.
    Tue, 16 Oct 2018 06:53:47 EDT
  • High entropy alloys hold the key to studying dislocation avalanches in metals

    Mechanical structures are only as sound as the materials from which they are made. For decades researchers have studied materials from these structures to see why and how they fail. Before catastrophic failure, there are individual cracks or dislocations that form, which are signals that a structure may be weakening. While researchers have studied individual dislocations in the past, a team from the University of Illinois at Urbana-Champaign, the University of Tennessee, and Oak Ridge National Laboratory has made it possible to understand how dislocations organize and react at nanoscale.
    Mon, 15 Oct 2018 15:54:05 EDT
  • Hawking's final book offers brief answers to big questions

    Stephen Hawking's final work, which tackles issues from the existence of God to the potential for time travel, was launched on Monday by his children, who helped complete the book after the British astrophysics giant's death.
    Mon, 15 Oct 2018 12:51:52 EDT
  • Researchers announce the discovery of an atomic electronic simulator

    Targeting applications like neural networks for machine learning, a new discovery out of the University of Alberta and Quantum Silicon Inc. in Edmonton, Canada is paving the way for atomic ultra-efficient electronics, the need for which is increasingly critical in our data-driven society. The key to unlocking untold potential for the greenest electronics? Creating bespoke atomic patterns to in turn control electrons.
    Mon, 15 Oct 2018 12:42:40 EDT
  • Study shows what happens when ultrafast laser pulses, not heat, cause a material to change phase

    The way that ordinary materials undergo a phase change, such as melting or freezing, has been studied in great detail. Now, a team of researchers has observed that when they trigger a phase change by using intense pulses of laser light, instead of by changing the temperature, the process occurs very differently.
    Mon, 15 Oct 2018 11:00:17 EDT
  • Study exposes security vulnerabilities in terahertz data links

    A new study shows that terahertz data links, which may play a role in ultra-high-speed wireless data networks of the future, aren't as immune to eavesdropping as many researchers have assumed. The research, published in the journal Nature, shows that it is possible for a clever eavesdropper to intercept a signal from a terahertz transmitter without the intrusion being detected at the receiver.
    Mon, 15 Oct 2018 11:00:03 EDT
  • Ionic decision-maker capable of self-learning

    A NIMS research group has invented an ionic device, termed an ionic decision-maker, capable of quickly making its own decisions based on previous experience using changes in ionic/molecular concentrations. The group then succeeded in demonstrating its operation. This device is capable of making decisions while efficiently adapting to changing situations by a means unrelated to the storage of past experiences in computer memory or to the performance of decision-making computations. This invention may lead to the development of novel artificial intelligence (AI) systems able to process analog information using hardware in a completely different manner from conventional AI systems that process digital information using software.
    Mon, 15 Oct 2018 10:08:06 EDT
  • Researchers report innovative optical tissue imaging method

    A UK-wide research team, led by the University of St Andrews, has developed an innovative new way to optically image through tissue, which could allow for a more detailed understanding and diagnosis of the early stages of various diseases, including cancer.
    Mon, 15 Oct 2018 08:56:50 EDT
  • Using puffed rice to simulate collapsing ice shelves and rockfill dams

    A pair of researchers at the University of Sydney has found that puffed rice and milk can serve as a stand-in to simulate collapsing ice shelves and rockfill dams. In their paper published in the journal Science Advances, Itai Einav and François Guillard discuss their experiments with rice and milk in their lab and what they believe it showed them about real-world collapse events.
    Mon, 15 Oct 2018 08:40:02 EDT