>Quantum fidelity
https://www.quantiki.org/wiki/fidelity#:~:text=%3D%3D%20Quantum%20Fidelity%20%3D%3D,matrices%2C%20known%20as%20Bures%20metric.
>ALICE matter
Also known as hypothetical mirror matter
https://en.m.wikipedia.org/wiki/Mirror_matter
Mirror dimension?