signals

Italian underground lab searches for quantum gravity signals

Italian underground lab searches for quantum gravity signals

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The low-radioactivity underground laboratory of the Gran Sasso. Credit: Massimiliano De Deo, LNGS-INFN For decades, physicists have been searching for a model of quantum gravity that would unify quantum physics, the laws that govern the infinitely small, and gravity. A major obstacle has been the difficulty of experimentally testing the predictions of the candidate models. …

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Black hole 'carnivals' could produce the signals seen by gravitational wave detectors

Black hole ‘carnivals’ could produce the signals seen by gravitational wave detectors

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Artist’s impression of a collection of black holes at the heart of a star cluster. Credit: ESA/Hubble, N. Bartmann Since 2015, the LIGO-Virgo-KAGRA collaboration has detected around 85 pairs of colliding black holes. We now know that Einstein was right: gravitational waves are generated by these systems as they wind around each other, warping spacetime …

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