I read some articles, where equivalence principle is no more valid in quantum area. One example are neutrinos, changing colours (electron, muon, tauon neutrino). But formulae are not derived from fundaments, so I do not understand, where it is the catch.(adsbygoogle = window.adsbygoogle || []).push({});

I read also about COW experiment, this is experiment with neutrons in gravitational field. Phase difference at this experiment is dependent from neutron mass. But behavior in gravitational field should be independent from gravitational field. So, hot it is with this?

Are here any clear and simple suggestins, what should happens with equivalence principle in quantum area?

But I am aware that experiment which would violate equivalence principle because of quantum physics, will be revolutionary for quantum gravity. But now it does not exist idea, how to do some measurement in quantum gravity area.

Best regards

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# Quantum physics and equivalence principle

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