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They should do this experiment in space.
by kkotak 5y ago
They should do this experiment in space.
- bckr 5y agoExcellent idea! Also this whole experiment is really exciting. I'd heard of quantum entanglement being demonstrated with larger objects, but this is the first I've heard of measuring gravity between small objects. It seems like this must eventually lead to quantum gravity, or. . . something else!
- krastanov 5y agoThe issue is that gravity and quantum mechanics contradict each other only when the curvature of spacetime is significant, which is not the case here. Still, it would be amazing to measure gravitational field from an entangled object... But I do not expect to see this during my natural lifetime.
- tasty_freeze 5y agoI don't believe that is true. For example, if this experiment can be carried out with much smaller masses, they could find that the attractive force isn't smooth but is instead stair-stepped, which would imply some kind of quantization in space or gravity.
- simiones 5y agoI believe QM and GR contradict each other for any curvature, but measuring the extremely small curvature/gravitational effects caused by a single particle would require enormous amounts of energy. Specifically the problem is the way that the uncertainty principle interacts with GR's assumptions.