Physics - Matter-Wave Self-Interferometry Ok i am not really sure i get this or its ramifications. Is this similar to what we discovered with the 'single electron double slot experiment' (or something like that)? If a particle is nonlocal then i can see how it could interfere with itself but that whole nonlocality stuff is challenging to visualize. It seems to suggest extra spatial dimensions or enfolded dimensions? Kind of like the 4 tires of a car on the road. The road only experiences a small portion of the tire at any moment but never 'experiences' the true whole, the entire car. Is that a good way to think of it. One 4 dimensional entity could exist in multiple 3 dimensions as observed by us right? But what is really meant my 'self-interferometer'?