Scientists observe Einstein’s gravity in the quantum world for the first time
Physicists have successfully observed gravitational effects on a quantum object for the first time using a device called the Quantum Galileo Interferometer. The experiment confirms that Einstein’s equivalence principle holds true even at the quantum scale.
Why it matters
This experiment bridges a critical gap between quantum mechanics and general relativity, two foundational theories of physics that have historically been difficult to reconcile.
An international team that includes Nobel Prize-winning physicist Professor Sir Roger Penrose has directly observed a long-predicted gravitational effect in a falling quantum object for the first time. The finding shows that a central principle of Einstein's theory of gravity continues to agree with quantum behavior under the conditions tested. The research, led by Ben-Gurion University of the Negev, the University of Ulm and the University of Oxford, was published September 2 in Science Advances .
Modern physics rests on two remarkably successful frameworks. Quantum mechanics describes the unusual behavior of atoms and other extremely small objects, while Einstein's theory of gravity explains falling bodies and the large-scale structure of the Universe. Despite their individual success, physicists still do not have a complete theory that brings the two together.
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