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March 27, 2015
Quantum correlation can imply causation
Ontario, Canada (SPX) Mar 26, 2015
Contrary to the statistician's slogan, in the quantum world, certain kinds of correlations do imply causation. Research from the Institute for Quantum Computing (IQC) at the University of Waterloo and the Perimeter Institute for Theoretical Physics shows that in quantum mechanics, certain kinds of observations will let you distinguish whether there is a common cause or a cause-effect relation between two variables. The same is not true in classical physics. Explaining the observed correlatio ... read more

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Quantum experiment verifies Einstein's 'spooky action at a distance'
An experiment devised in Griffith University's Centre for Quantum Dynamics has for the first time demonstrated Albert Einstein's original conception of "spooky action at a distance" using a single p ... more
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Thousands of atoms entangled with a single photon
Physicists from MIT and the University of Belgrade have developed a new technique that can successfully entangle 3,000 atoms using only a single photon. The results, published today in the journal N ... more
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Black holes and the dark sector explained by quantum gravity
Ask any theoretical physicist on what are the most profound mysteries in physics and you will be surprised if she mentions anything other than Quantum Gravity and the Dark Sector. Questions such as ... more
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Frozen highly charged ions for highest precision spectroscopy
A team of researchers from the Max Planck Institute for Nuclear Physics in Heidelberg, the Physikalisch-Technische Bundesanstalt in Braunschweig and the University of Aarhus in Denmark demonstrated ... more
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Quantum mechanic frequency filter for atomic clocks
Atomic clocks are the most accurate clocks in the world. In an atomic clock, electrons jumping from one orbit to another decides the clock's frequency. To get the electrons to jump, researchers shin ... more
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Physicists propose new classification of charge density waves
LSU Professors in the Department of Physics and Astronomy Ward Plummer and Jiandi Zhang, in collaboration with their colleagues from the Institute of Physics, Beijing, China, have published a paper ... more
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Particle jets reveal the secrets of the most exotic state of matter
Shortly following the Big Bang, the Universe was filled with a chaotic primordial soup of quarks and gluons, particles which are now trapped inside of protons and neutrons. Study of this quark-gluon ... more
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Electrons in slow motion
A process that is too fast to be measured and analysed. Yet a group of international scientists did not lose heart and conceived a sort of highly sophisticated moviola film-editing system, which all ... more
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Breakthrough in particle control creates special half-vortex rotation
A breakthrough in the control of a type of particle known as the polariton has created a highly specialised form of rotation. Researchers at the Universities of Strathclyde and Pittsburgh, and ... more
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First scientific publication from data collected at NSLS-II
Just weeks after the National Synchrotron Light Source II (NSLS-II), a U.S. Department of Energy Office of Science User Facility at Brookhaven National Laboratory, achieved first light, a team of sc ... more
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Pennies reveal new insights on the nature of randomness
The concept of randomness appears across scientific disciplines, from materials science to molecular biology. Now, theoretical chemists at Princeton have challenged traditional interpretations of ra ... more
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Why isn't the universe as bright as it should be?
A handful of new stars are born each year in the Milky Way, while many more blink on across the universe. But astronomers have observed that galaxies should be churning out millions more stars, base ... more
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The first ever photograph of light as a particle and a wave
Quantum mechanics tells us that light can behave simultaneously as a particle or a wave. However, there has never been an experiment able to capture both natures of light at the same time; the close ... more
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Forbidden quantum leaps possible with high-res spectroscopy
A new twist on an old tool lets scientists use light to study and control matter with 1,000 times better resolution and precision than previously possible. Physicists at the University of Mich ... more
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What Big Bang? Universe May Have Had No Beginning at All
What we don't know about the Universe... could fill the Universe. Two theoretical physicists have suggested nothing like the Big Bang played a role in the start of our universe 13.8 billion years ag ... more
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Top-precision optical atomic clock starts ticking
A state-of-the-art optical atomic clock, collaboratively developed by scientists from the University of Warsaw, Jagiellonian University, and Nicolaus Copernicus University, is now "ticking away" at ... more
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    A solution to the puzzle of the origin of matter itself
    Most of the laws of nature treat particles and antiparticles equally, but stars and planets are made of particles, or matter, and not antiparticles, or antimatter. That asymmetry, which favors matte ... more
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    Astronomers find impossibly large black hole
    An international team of astronomers have found a huge and ancient black hole which was powering the brightest object early in the universe. The black hole's mass is 12 billion times that of t ... more
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    New insight found in black hole collisions
    New research by an astrophysicist at The University of Texas at Dallas provides revelations about the most energetic event in the universe - the merging of two spinning, orbiting black holes into a ... more
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    The building blocks of the future defy logic
    Wake up in the morning and stretch; your midsection narrows. Pull on a piece of plastic at separate ends; it becomes thinner. So does a rubber band. One might assume that when a force is applied alo ... more
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    ALMA reveals mild environment around super black hole
    A research team led by Shuro Takano at the National Astronomical Observatory of Japan (NAOJ) and Taku Nakajima at Nagoya University observed the spiral galaxy M77, also known as NGC1068, with the At ... more
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    Widespread winds and eedback from supermassive black holes
    Astronomers have discovered that the winds from supermassive black holes at the centre of galaxies blow outward in all directions, a suspected phenomenon that had been difficult to prove before now. ... more
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    Monster black hole discovered at cosmic dawn
    Scientists have discovered the brightest quasar in the early universe, powered by the most massive black hole yet known at that time. The international team led by astronomers from Peking University ... more
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    Stretch and relax by losing 1 electron magnetism switch
    The scientists used the unique Nanocluster Trap experimental station at the BESSY II synchrotron radiation source at Helmholtz-Zentrum Berlin and published their results in the Journal Angewandte Ch ... more
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