Howtosignalprocessing
- Does quantum physics disprove causality?
- Does quantum entanglement break causality?
- What is quantum causality?
- Does special relativity violate causality?
Does quantum physics disprove causality?
In classical physics – and everyday life – there is a strict causal relationship between consecutive events. If a second event (B) happens after a first event (A), for example, then B cannot affect the outcome of A.
Does quantum entanglement break causality?
Quantum entanglement breaks local causality, so it doesn't makes sense to analyze at all which event (measurement) at Alice or Bob was first (cause) and which - an effect, because these events are indistinguishable. Causality IS violated in this case.
What is quantum causality?
In quantum physics, it is assumed that the background time or definite causal structure pre-exists such that for every pair of events A and B at distinct space–time regions one has either 'A is in the past of B', or 'B is in the past of A', or the two are space-like separated (see Fig.
Does special relativity violate causality?
Causation must not be violated in special relativity. A future light cone should be affected by an event. On the other hand, an event should have a cause in its previous light cone. Therefore, the occurrences must take place within the light cone of the other.
