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There Is No Spooky Action at a Distance in Quantum Mechanics
1Departments of Astronomy and Physics, Haverford College, Haverford, PA 19041, USA.
Entropy (Basel, Switzerland)
|April 23, 2022
Summary
Einstein questioned quantum nonlocality, the idea that particles instantly affect each other over distance. This paper argues that this apparent paradox stems from wrongly assuming the quantum state is a real physical entity.
Area of Science:
- Quantum Mechanics
- Foundations of Physics
Background:
- Einstein's early concerns about quantum entanglement and
- action at a distance
- challenged the completeness of quantum mechanics.
- The debate over wave function collapse and its implications for special relativity was largely philosophical for decades.
- John Bell's 1964 inequality revived discussions on quantum nonlocality, impacting mainstream physics.
Purpose of the Study:
- To re-examine the concept of quantum nonlocality and its historical context.
- To challenge the prevailing interpretation of the quantum state as ontic (real).
- To propose an alternative perspective on quantum phenomena that avoids apparent paradoxes.
Main Methods:
- Historical analysis of the debate surrounding quantum mechanics and nonlocality.
- Philosophical examination of the interpretation of the quantum state.
- Argumentative critique of the belief in the ontic nature of quantum states.
Main Results:
- The apparent nonlocality in quantum mechanics arises from a gratuitous belief in the ontic nature of the quantum state.
- Einstein's initial concerns, while valid, were sidelined by the practical success of the Schrödinger equation.
- Bell's theorem reintroduced nonlocality as a central issue, but its interpretation may be flawed.
Conclusions:
- The perceived nonlocality of quantum mechanics is an interpretational issue, not an inherent feature of nature.
- Adopting an epistemic view of the quantum state (as representing knowledge) resolves the paradoxes.
- Revisiting the foundational assumptions about the quantum state is crucial for understanding quantum mechanics.
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