Discussion Overview
The discussion revolves around the Bell inequality and its experimental tests, specifically questioning whether any tests have shown that the Bell inequality is not violated. Participants also explore the various types of experiments that test the Bell inequality, including those involving different particles and observables.
Discussion Character
- Exploratory
- Debate/contested
- Technical explanation
Main Points Raised
- Some participants inquire whether there are tests that demonstrate the Bell inequality is not violated.
- One participant asserts that to date, all tests that theoretically should show entanglement do indeed violate some form of the Bell inequality.
- Different types of particles, including electrons, photons, and nuclei, have been used in Bell tests, with entanglement observed in pairs and larger groups of particles.
- Entanglement has been observed in various pairs of non-commuting observables, such as spin, position/momentum, and time/energy.
- Another participant suggests that it is possible to not violate the Bell inequality using defined sets of physically separate macro-objects with specific characteristics, though this perspective may be less exciting to some.
- A later reply clarifies that while no tests violate predictions of quantum mechanics regarding entanglement, in broader contexts, inequalities are not violated, suggesting a nuanced interpretation of the results.
Areas of Agreement / Disagreement
Participants express differing views on whether the Bell inequality can be shown not to be violated, with some asserting that all relevant tests demonstrate violations while others propose scenarios where it may not be violated. The discussion remains unresolved regarding the implications of these tests.
Contextual Notes
Some statements rely on specific interpretations of the Bell inequality and its implications, and there are unresolved questions about the conditions under which different types of tests are conducted.