Interpretations of quantum mechanics
Niels BohrHugh EverettDavid BohmJohn Bell
This page delivers no verdict; it presents claims and evidence with their sources. No theory in science is absolute. Method
⑂ Divergence of views. Views diverge here; each sub-branch is a separate view, presented with its own evidence. Compare the views side by side →
For everyone
Quantum mechanics predicts experimental results with extraordinary accuracy, but physicists do not agree on what these results say about reality. What happens when a measurement is made? Is the wave function something real, or an expression of our knowledge? Different interpretations give different answers to these questions, and most agree on the same experimental predictions. In a 2025 Nature survey of more than 1,100 physicists, no interpretation won a majority.
For specialists
The measurement problem is the tension between the linear, deterministic evolution of the Schrödinger equation and the single, probabilistic outcome observed in a measurement. Interpretations either add a collapse process to the equation (objective collapse), add extra variables (pilot wave), accept that the wave function never collapses (many worlds), or read the wave function as the observer's knowledge or belief (some forms of Copenhagen, QBism). Objective-collapse models make predictions that differ from standard theory and can therefore be tested.
Claims
- There is agreement on the mathematical framework of quantum mechanics but no agreement on what that framework says about physical reality.[1]
Evidence
Supporting
In Nature's 2025 survey, 36 percent of respondents chose the Copenhagen interpretation, 17 percent epistemic approaches treating the wave function as information, and 15 percent many worlds; only 24 percent said they were confident their chosen interpretation was correct.[1]
Challenging
—
Open questions
- What really happens during a measurement? Can experiment decide between the interpretations?
Connections
Sources
- Article (2025). Physicists disagree wildly on what quantum mechanics says about reality, Nature survey shows. Nature 643, 1175–1179DOI 10.1038/d41586-025-02342-yarchive
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Cite this page
Athena contributors. (2026). Interpretations of quantum mechanics. Athena: The tree of human knowledge. Retrieved November 1, 2026, from https://latifkedi.github.io/athena/en/d/kuantum-yorumlari/
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title = {Interpretations of quantum mechanics},
author = {{Athena contributors}},
year = {2026},
howpublished = {\url{https://latifkedi.github.io/athena/en/d/kuantum-yorumlari/}},
note = {Athena: The tree of human knowledge. Accessed: 2026-11-01}
}Added: September 28, 2026 · Last changed: September 28, 2026 · Page history