I’ve always wondered if physics can be useful in this context. Emulators will often approximate a physical system in such a way that it looks indistinguishable,

I’ve always wondered if physics can be useful in this context. Emulators will often approximate a physical system in such a way that it looks indistinguishable, but the emulator may grossly violate a fundamental physical law. An example of this is training neutral networks to emulate the hydrodynamic equations of motion. The emulator temperature profile may look like the real thing, but it could also grossly violate total conservation of energy. I’m curious if we can apply such “physics tests” to deep fakes to search for violations.