Onthological models predictively inequivalent to quantum theory

Abstract

Recently, it has been argued that no extension of quantum theory can have improved predictive power under a strong assumption of free choice of the experimental settings and validity of quantum mechanics. Here, under a different free choice assumption, we describe a model which violates this statement for almost all states of a bipartite two-level system, in a possibly experimentally testable way. From consistency with quantum mechanics and the nonsignaling principle, we derive a bound on the local averages for the family of deterministic ontological theories that our model belongs to.

5 pages, 2 figures

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Cited by in corpus (10)

• Quantum Theory and Determinism
• Nonlocal quantum information transfer without superluminal signalling and communication
• About possible extensions of quantum theory
• Ontological Models in Quantum Mechanics: What do they tell us?
• Is a description deeper than the quantum one possible?
• Symmetry as a foundational concept in Quantum Mechanics
• The Quantum Measurement Problem: A Review of Recent Trends
• A Family of Local Deterministic Models for Singlet Quantum State Correlations
• Reciprocal ontological models show indeterminism of the order of quantum theory
• Epistemic Boundaries and Quantum Uncertainty: What Local Observers Can (Not) Predict