Knowidea

The phenomenon of quarks seemingly popping in and out of existence and the observation of particles drifting in and out of our three dimensions may be explained by space’s ability to exert some manner of force on matter. Perhaps when matter occupies an area of space, it actually exerts a degree of force on that space, forcing space itself into the additional, smaller dimensions proposed by string theory.
Furthermore, if space is actually able to exert a degree of force on matter in response, it may explain the constant flux of quarks in and out of our three dimensions. Matter may compress and push space into the higher dimensions while space also resists and pushes matter back into the three primary dimensions. This sort of fight between the substance of space and the substance of matter for a particular location of space would create a sort of constant flow of quantum particles back and forth.
Although many of the higher dimensions are assumed to be very small, the fact that matter is mostly vacuum may explain why this hypothesis is still possible.