What makes a causal loop consistent?

arXiv:2609.39735 · quant-ph · Submitted 2026-09-30 · Read on arXiv

quant-ph

Submitted: 2026-09-30

Updated: 2026-09-30

Terminology

• Consistency — 13× in this paper · explained in 3 episodes
• Trace — 5× in this paper · explained in 2 episodes
• Core — 1× in this paper · explained in 2 episodes
• Entanglement — 1× in this paper · explained in 4 episodes
• Generalization — 1× in this paper · explained in 13 episodes
• Hilbert Space — 1× in this paper · explained in 2 episodes
• Hypergraph — 1× in this paper · explained in 2 episodes
• Quantum Physics — 1× in this paper · explained in 10 episodes
• Self-consistency — 1× in this paper · explained in 2 episodes
• Supplemented Material — 1× in this paper

Sources

• Indefinite Quantum Causality
• Nonclassicality in correlations without causal order
• Unilateral determination of causal order in a cyclic process
• Paradox-free classical non-causality and unambiguous non-locality without entanglement are equivalent
• Parity erasure: a foundational principle for indefinite causal order
• E. Specker: "The logic of non-simultaneously decidable propositions" (1960)
• Specker's fundamental principle of quantum mechanics
• Measurement sharpness cuts nonlocality and contextuality in every physical theory
• A Proof of Specker's Principle

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