2014 Fiscal Year Final Research Report
Woodward's concept of causation in modern physics
| Project/Area Number |
23701009
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Sociology/History of science and technology
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| Research Institution | Nihon University |
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Principal Investigator |
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Keywords | 量子力学 / 因果 / 非局所性 / EPR / ベルの不等式 / 複製不可能定理 |
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| Outline of Final Research Achievements |
One of the objectives that constitute this project is to examine the argument of Einstein, Podolsky and Rosen (EPR) because it is important to clarify causality in quantum mechanics. Noncommutativity of operators plays an important role in the EPR argument. To clarify it from an operational point of view, we showed that there is no universal imperfect cloning operation if and only if there are operators that do not commute. With this result, we can interpret noncommutativity of operators from an operational point of view.
An important step to understanding the EPR argument is the discovery of Bell's inequality. Bell assumed a complete description in terms of local hidden variables and derived Bell's inequality under this assumption. In this project, we showed that an EPR state for incommensurable pairs is Bell correlated. From a point of view of this result, it seems to be difficult to maintain EPR conclusion.
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| Free Research Field |
科学哲学
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