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Related Experiment Video

Updated: Jul 2, 2026

Setting Limits on Supersymmetry Using Simplified Models

Setting Limits on Supersymmetry Using Simplified Models

Published on: November 15, 2013

Hidden variable models for quantum theory cannot have any local part.

Roger Colbeck¹, Renato Renner

¹Institute for Theoretical Physics, ETH Zurich, 8093 Zurich, Switzerland. colbeck@phys.ethz.ch

Physical Review Letters

|September 4, 2008

Summary

This summary is machine-generated.

Quantum mechanics is incompatible with local hidden variable models. This study reveals experimentally verifiable quantum correlations that rule out hidden variable models with any significant local component, challenging theories like Leggett's.

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Area of Science:

Quantum Physics
Foundations of Quantum Mechanics

Background:

Bell's theorem demonstrates the incompatibility of quantum mechanics with local hidden variable models.
Nonlocal hidden variable models can reproduce quantum mechanical predictions.
Leggett's model is an example of a hidden variable theory with a nontrivial local part.

Purpose of the Study:

To investigate general hidden variable models with both local and nonlocal components.
To identify quantum correlations that can experimentally distinguish between different types of hidden variable theories.

Main Methods:

Analysis of general hidden variable models incorporating both local and nonlocal elements.
Derivation of specific quantum correlations predicted by these models.

Main Results:

Demonstration of quantum correlations that are fundamentally incompatible with any hidden variable model possessing a nontrivial local part.
Identification of experimentally verifiable signatures that differentiate quantum mechanics from such models.

Conclusions:

The existence of experimentally verifiable quantum correlations challenges hidden variable models with significant local components.
These findings provide a new avenue for experimentally probing the foundations of quantum mechanics and testing alternative theories.