RDIV / ANSWER Q-004 · QUANTUM FOUNDATIONS
Does Decoherence Solve the Quantum Measurement Problem?
Decoherence explains suppression of interference and stable records, but its relationship to unique outcomes depends on the interpretation of quantum mechanics.
Fix the object first.
Decoherence arises when a system becomes entangled with many environmental degrees of freedom. Interference between relevant alternatives becomes effectively inaccessible in local observations, producing robust quasi-classical behavior in appropriate bases.
The visible label is not the whole system.
Decoherence explains why macroscopic interference is hard to observe and why records can become stable. That is a major part of measurement theory even among approaches that disagree over whether a further foundational problem remains.
Trace the burden.
- Decoherence is a well-established physical process with extensive theoretical and experimental support.
- Major scholarly reviews emphasize its role in classical emergence and measurement.
- Whether decoherence “solves” the measurement problem depends on how the problem is formulated.
- Some authors regard an additional outcome problem as unresolved; others embed decoherence in interpretations that dissolve or reframe it.
Where the work adds something.
CBR accepts decoherence as record-forming physics and proposes a separate realization target. The Answer page must state that this separation is part of the CBR framework and not a consensus conclusion that decoherence is physically incomplete.