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Question69
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What happens to the other possible outcomes after decoherence has been finalized? Where do they go?
This is basically the measurement problem: The mathematical formalism gives us the probabilities of the various outcomes, but doesn't say anything about how we end up with a single outcome.Question69 said:What happens to the other possible outcomes after decoherence has been finalized? Where do they go?
right, but decoherence is mainly used in non-collapse foundations of QM no? So, if that's the case, since the unitary evolution is preserved, what happens to the other entangled superpositions?Nugatory said:This is basically the measurement problem: The mathematical formalism gives us the probabilities of the various outcomes, but doesn't say anything about how we end up with a single outcome.
The answer will be different for different interpretations, and if any of the answers were completely satisfactory people wouldn't have argued about this for the past century.
Decoherence is not part of any particular interpretation of QM. It's a consequence of the basic math of QM.Question69 said:decoherence is mainly used in non-collapse foundations of QM no?
Yes, that's what I said what happens in the bare-bone version of this, not coupled with any other interpretation.PeterDonis said:Decoherence is not part of any particular interpretation of QM. It's a consequence of the basic math of QM.
Decoherence.Question69 said:what happens in the bare-bone version of this, not coupled with any other interpretation.
What "other entangled systems"? Entanglement does not duplicate systems. It just means the individual subsystems don't have definite states, only the joint entangled system does. There is still only one of each subsystem.Question69 said:what happens with the other entangled systems?
Quantum decoherence is a phenomenon in quantum mechanics where the superposition of multiple possible states of a system collapses into a single state due to interactions with the environment. This results in the loss of information about the other possible outcomes.
Quantum decoherence occurs when a quantum system interacts with its surrounding environment, such as through collisions or interactions with photons. This causes the system to lose coherence and behave like a classical system, with only one possible outcome.
During quantum decoherence, the other possible outcomes of a system's superposition are no longer observable or accessible. They become "entangled" with the environment and are effectively erased from the system's state.
No, quantum decoherence is an irreversible process. Once a system has decohered, the other possible outcomes cannot be recovered. However, in some cases, it is possible to minimize the effects of decoherence through careful control and isolation of the system.
Quantum decoherence has significant implications for the field of quantum computing, as it limits the ability to maintain and manipulate superposition states. It also plays a role in our understanding of the transition from the quantum to classical world, and has implications for the interpretation of quantum mechanics.