I continued on searching for sci fi weapons that work under exotic physics which is not handwavium, and at least unobtainium, and I saw this comment:
“Anti-Mass spheres. Bubbles of pure nothingness, the negative counterpart of mass itself.
Upon being created, the sphere immediately seeks out an object of equal mass and zips toward it at near light speed. When it makes contact, both disappear. For it to work, the exact mass of the target object needs to be known down to the quantum increments, but if you get it right there's no defense.”
My question if such a thing of (Anti-Mass) or (Pure Nothingness) exists, and subsequently if the effects stated are real and possible.
I need not ask on how to build one, except if the first two answers confirms its existence.
Forum for this discussion: https://forums.sufficientvelocity.com/threads/create-science-fiction-weapons-based-on-exotic-physics.11280/