Even the heaviest particles experience the usual quantum weirdness, new experiment shows

By Bruce Yabsley, Associate Professor of Physics, University of Sydney

One of the most surprising predictions of physics is entanglement, a phenomenon where objects can be some distance apart but still linked together. The best-known examples of entanglement involve tiny chunks of light (photons), and low energies.

At the Large Hadron Collider in Geneva, the world’s largest particle accelerator, an experiment called ATLAS has just found entanglement in pairs of top quarks: the heaviest particles known to science.

The results are described in a new paper from my…

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