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If superluminal matter existed, would we know it?
by Causality1 5y ago
If superluminal matter existed, would we know it?
- drran 5y agoSuperluminal speed is called "instant" in physics.
- abobrick 5y agoIndeed, a superluminal object will appear to have an infinite velocity for some physical observers.
- drran 5y agoThe superluminal speed is not an infinite speed, it's just faster than the speed of light, of course, but it called "instant". For example, a photon of light is emitted or absorbed "instantly", which is not true, obviously, because it means infinite speed of transition.
- abobrick 5y agoIn principle, yes, for sure, we could detect it. For example, it would still generate gravity and be uniquely identifiable this way. But then, superluminal matter breaks causality, allows sending signals back in time and, to the best of our knowledge, is unphysical.