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    Lorentz invariance tagged posts

    High Altitude Water Cherenkov Observatory Tests Speed of Light

    April 6, 2020, Categories  Astronomy/Space, Physics

    This compound graphic shows a view of the sky in ultra-high energy gamma rays. The arrows indicate the four sources of gamma rays with energies over 100 TeV from within our galaxy (courtesy of the HAWC collaboration) imposed over a photo of the HAWC Observatory’s 300 large water tanks. The tanks contain sensitive light detectors that measure showers of particles produced by the gamma rays striking the atmosphere more than 10 miles overhead (courtesy of Jordan Goodman)

    New measurements confirm, to the highest energies yet explored, that the laws of physics hold no matter where you are or how fast you’re moving...

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    The Universe, where Space-Time becomes Discrete

    April 24, 2016, Categories  Physics

    Harmonic oscillator device is shown. Credit: LENS. Florence, Italy

    Harmonic oscillator device is shown. Credit: LENS. Florence, Italy

    Relativity and quantum mechanics: A non-local union? A theoretical study has analyzed a model that saves special relativity and reconciles it with granularity by introducing small-scale deviations from the principle of locality demonstrating that it can be experimentally tested with great precision.

    Our experience of space-time is that of a continuous object, without gaps or discontinuities, just as it is described by classical physics. For some quantum gravity models however, the texture of space-time is “granular” at tiny scales (below the so-called Planck scale, 10-33 cm), as if it were a variable mesh of solids and voids (or a complex foam)...

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