A Quantum Cheshire Cat was separated from its grin in 2013. Now, a controversial thought experiment says two quantum Cheshire cats can exchange their grins. The upshot: properties of particles, such as their spin, may not belong to the particles. @sciamhttps://www.scientificamerican.com/article/spin-swapping-particles-could-be-quantum-cheshire-cats/ …
Reminds me of Feynman’s “single electron” theory
1:08 AM - 7 May 2019
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