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Ghidan Cone Theorem: The Geometric Equivalence of Tsirelson Quantum Correlation Bound and Minkowski Nested Causal Speed Ratio

Ghidan, Florin

Published Jan 1, 2025• 0 citations
Publisher

Abstract

The Ghidan Cone Theorem establishes a fundamental equivalence between the maximal quantum correlation bound (Tsirelson’s bound) and the geometric structure of nested causal cones in Minkowski spacetime. By demonstrating that the ratio of the Minkowski causal boundary speed (c_{true}) to the physical measurement speed (v) exactly matches the Tsirelson bound (2\sqrt{2}), this work provides a novel geometric interpretation of quantum nonlocality consistent with relativistic causality.The theorem shows that quantum correlations in Bell-type inequalities are strictly constrained by the geometry of spacetime: physical reality, including all measurements and classical information, occupies a causal domain nested within the Minkowski cone. Superquantum correlations (PR-box limits) are excluded as they would violate this geometric boundary. This framework unifies quantum mechanics and relativity by linking algebraic quantum correlation constraints to the foundational structure of spacetime and vacuum impedance.The paper includes rigorous mathematical proofs, geometric analysis, and physical interpretations, and offers new insights into the measurement problem, quantum speed limits, entanglement, and the interface of quantum theory and relativity. The Ghidan Cone Theorem opens pathways for experimental testing and further theoretical developments in quantum gravity and informational spacetime physics.Keywords: quantum correlations, Tsirelson bound, Minkowski spacetime, causal cones, Bell inequalities, quantum nonlocality, relativity, vacuum impedance, entanglement, quantum foundations.

DOI
10.6084/m9.figshare.30690377

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The Ghidan Cone Theorem establishes a fundamental equivalence between the maximal quantum correlation bound (Tsirelson’s bound) and the geometric structure of nested causal cones in Minkowski spacetime. By demonstrating that the ratio of the Minkowski causal boundary speed (c_{true}) to the physical measurement speed (v) exactly matches the Tsirelson bound (2\sqrt{2}), this work provides a novel geometric interpretation of quantum nonlocality consistent with relativistic causality.The theorem shows that quantum correlations in Bell-type inequalities are strictly constrained by the geometry of spacetime: physical reality, including all measurements and classical information, occupies a causal domain nested within the Minkowski cone. Superquantum correlations (PR-box limits) are excluded as they would violate this geometric boundary. This framework unifies quantum mechanics and relativity by linking algebraic quantum correlation constraints to the foundational structure of spacetime and vacuum impedance.The paper includes rigorous mathematical proofs, geometric analysis, and physical interpretations, and offers new insights into the measurement problem, quantum speed limits, entanglement, and the interface of quantum theory and relativity. The Ghidan Cone Theorem opens pathways for experimental testing and further theoretical developments in quantum gravity and informational spacetime physics.Keywords: quantum correlations, Tsirelson bound, Minkowski spacetime, causal cones, Bell inequalities, quantum nonlocality, relativity, vacuum impedance, entanglement, quantum foundations.
We present a reconstruction of quantum correlation structure from six admissibility principles: compositional closure, locality factorization, norm-bounded growth, convex linearity, closure symmetry (self-duality), and local tomography. We show that these conditions force the state space to be a homogeneous self-dual cone, which by the Koecher–Vinberg theorem corresponds to a Euclidean Jordan algebra. Imposing physical composition constraints reduces this structure uniquely to complex matrix algebras. The Tsirelson bound then follows as a corollary of operator norm boundedness. Superquantum correlations (e.g., PR-box correlations) are excluded not by appeal to relativity but by violation of norm-bounded compositional closure. The result reframes quantum theory as the maximal globally admissible correlation theory under bounded composition
This paper introduces a Source-Centric Model of quantum electrodynamics, asserting that fermionic sources—such as electrons and stable charged matter—are ontologically primary, while the electromagnetic gauge field is an operationally realized mediator contingent on matter coupling. By reinterpreting the physical instantiation of field excitations as interaction-dependent, the author provides a new framework for understanding the relationship between quantum information and relativistic causality. Core Theoretical Contributions: Source-Centric Ontology: Proposes that gauge-field excitations (photons) are only "physically instantiated" when participating in interaction channels with stable matter sources. Nested Causal Manifolds: Introduces a dual-cone structure in spacetime: an outer geometric causal limit (ctrue) and an inner operational measurement limit (v), where usable signaling is restricted to the inner cone. Principle of Causal Isomorphism: Formalizes a link between the dimensionless saturation of quantum correlations (Tsirelson's bound) and the geometric dilation of causal structures. Derivation of Vacuum Informational Impedance (ZΨ): Derives a fixed speed ratio of c_true/v = 2√2 ≈ 2.8284, defining this as the fundamental informational impedance of the vacuum. Geometric Reinterpretation of Nonlocality: Explains quantum nonlocality as correlations inhabiting the outer geometric cone, thereby preserving no-signaling principles while providing a geometric account of why superquantum (PR-box) correlations are excluded The paper further explores the Dynamic Impedance Generalization, suggesting that variations in event density or informational flux can locally decrease the operational speed v, offering a novel route to modeling time dilation and gravitational dynamics as impedance amplification.
This work reframes “spooky action at a distance” as a property of time–space admissibility rather than a dynamical influence, showing that quantum nonlocal correlations arise from a constrained geometry of states and measurements. We treat light‑cone boundaries as Maximal Admissibility Surfaces (MAS) that enforce non‑signaling and forbid smooth outward crossing, while still permitting global correlations up to the Tsirelson bound. Within this structure, the Dual‑Invariant Equation fixes a minimal‑uncertainty, self‑dual gauge (Gaussian/Hermite) so that spreads, inner products, and correlation tests are evaluated consistently; the Construct Law Equation defines the global admissibility ledger (normalization, positivity, non‑signaling, microcausality, quantum realizability); and the Master Structure Equation governs constrained evolution with normal‑cone boundary reactions, pinning correlations at active MAS faces. We give compact derivations of CHSH/Tsirelson constraints and formulate EPR steering and Bell tests as boundary activations in the admissible set. The result is a unified, constraint‑first account of nonlocality: entanglement produces global correlations across spacelike regions without signaling, precisely because admissibility surfaces in spacetime regulate what structure can persist, how it evolves, and where it must become tangential rather than cross causality.
When two particles are created together in a single quantum event, they can become entangled: their properties remain correlated no matter how far apart they travel. Measure one, and the outcome of measuring the other is no longer independent. This correlation is the central puzzle of quantum mechanics. Classical physics sets a hard limit on how strong such correlations can be. The CHSH inequality (Clauser, Horne, Shimony, and Holt, 1969) formalises that limit: for any theory in which each particle carries its own independent set of predetermined answers, the correlation measure S cannot exceed 2. Bell-type experiments consistently violate this bound, with the maximum ideal value predicted by quantum mechanics being S = 2√2. Something does not fit. Several explanations have been proposed. Some invoke extra dimensions. Others appeal to wormhole geometries connecting the particles. The mainstream position is that the outcomes "collapse and become correlated," which states the observation without explaining the mechanism. All of these either add dramatic ontological furniture or repackage the mystery as an answer. This paper proposes a simpler reading. The value 2√2 is not a mystery to be explained by exotic physics. It is the geometric signature of a jointly structured bipartite state whose correlation was fixed at the source, at the moment of entanglement, not at measurement time. The two particles are not two independent objects that later communicate. They are two readout surfaces of a single joint preparation. The cosine correlation law, the Tsirelson bound, and the full Bell violation follow directly from the geometry of the two-qubit state space and the relative orientation of the measurement settings. No signal, no extra dimension, no new physics is required. Three companion papers in this series explored the opposite hypothesis: The Speed of Light and Its Limits [1] examined whether entanglement could circumvent relativistic constraints; Quantum Entanglement as a Communication Channel [2] proposed a synchronized-clock experiment to detect timing signatures; and Parametrizing Correlation Timing [3] developed a Lorentz-structured ansatz for concurrence-dependent delays. If those experimental proposals return null, the present reading is reinforced: not by proof, but by elimination of the alternatives that require more. A final section develops geometric and regime-based frameworks consistent with the source-structural reading, including the measurement torus as the natural geometry of Bell experiments, a jointness index based on Concurrence, and connections to emergent spacetime programmes. These are offered as directions for future development.
Quantum theory is in principle compatible with processes that violate causal inequalities, an analogue of Bell inequalities that constrain the correlations observed by sets of parties operating in a definite causal order. Since the introduction of causal inequalities, determining their maximum quantum violation, analogue to Tsirelson’s bound for Bell inequalities, has remained an open problem. Here we provide a general method for bounding the violation of arbitrary causal inequalities, establishing limits to the correlations achievable by arbitrary local experiments and by arbitrary quantum processes with indefinite causal order. We prove that the maximum violation is generally smaller than the algebraic maximum of the corresponding correlation, and determine Tsirelson-like bounds for a class of causal inequalities including some of the most paradigmatic examples. Our results motivate a search for physical principles characterizing the boundary of the set of quantum correlations with indefinite causal order. Quantum theory has been shown to be compatible with processes violating a definite causal order, but no detailed analysis of the maximum allowed degree of violation has been carried out so far. Here, the authors fill this gap by providing the analogue of Tsirelson’s bound for the violation of causal inequalities.