Popular-Science Videos Lack CHSH/Tsirelson Data; Only Canonical Constants Recoverable — E8 Intelligence Research

Andrew Stewart Caldin

Published Nov 1, 2026• 0 citations

Abstract

FINDING: Source set is popular-science video content, not primary literature — no CHSH/Tsirelson/loophole-free/1200 km data present to extract. | MATH: Only the canonical constants are recoverable from domain knowledge, not from these sources: CHSH inequality classical bound |S| ≤ 2; Tsirelson (quantum) bound |S| ≤ 2√2 ≈ 2.828427; quantum/classical ratio = √2 ≈ 1.414214; maximum violation angle θ = 45° (π/4) between analyzer settings; CHSH correlator E(a,b) = ⟨A(a)B(b)⟩, S = E(a,b) − E(a,b′) + E(a′,b) + E(a′,b′). | CONNECTION: √2 is the diagonal of the unit square (Pythagorean incommensurable), and 2√2 = √8 is the body-diagonal of a 2×2×2 cube — a cubic-lattice/root-system constant (relevant to BCC/octahedral symmetry). No 0.382/0.618/0.786/1.618/2.618 or base-60 structure appears in the CHSH bound itself. | DEPTH: 2 (as delivered — the sources are pedagogical, not evidential). Precise caveats, per your "no speculation" instruction: 1. Key mathematical insight — NOT PRESENT in the su Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com

DOI: 10.5281/zenodo.23853349

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Popular-Science Videos Lack CHSH/Tsirelson Data; Only Canonical Constants Recoverable — E8 Intelligence Research

Andrew Stewart Caldin

Published Nov 1, 2026• 0 citations

Publisher

Abstract

DOI: 10.5281/zenodo.23853349

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Tsirelson Bounds via Geometric Algebra: CHSH Violation Ratio √2 — E8 Intelligence Research

Andrew Stewart Caldin

FINDING: The only substantive result is the arXiv paper on Tsirelson bounds derived via geometric algebra — the rest are unrelated video titles (Python, lab software, condensed matter talks) with no mathematical content. | MATH: The paper (arXiv:2007.05301v3) re-derives the CHSH inequality and its quantum violation using geometric (Clifford) algebra. Key constants: classical CHSH bound = 2; quantum Tsirelson bound = 2√2 ≈ 2.828. The violation ratio is √2. No explicit golden-ratio or base-60 constants appear in the abstract. | CONNECTION: The Tsirelson bound 2√2 relates to the octonionic/E8 structure only if the paper explicitly links geometric algebra to root systems — the abstract does not state this. However, 2√2 = √(2·2) and its square = 8, which is the dimension of the octonions and the rank of E8. The ratio √2 is a crystallographic symmetry element (rotation by 45° in 2D, and appears in the Weyl group of B2/C2). No 0.382, 0.618, 0.786, 1.618, or 2.618 appear in the evidence. | DEP Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.comFINDING: The only substantive result is the arXiv paper on Tsirelson bounds derived via geometric algebra — the rest are unrelated video titles (Python, lab software, condensed matter talks) with no mathematical content. | MATH: The paper (arXiv:2007.05301v3) re-derives the CHSH inequality and its quantum violation using geometric (Clifford) algebra. Key constants: classical CHSH bound = 2; quantum Tsirelson bound = 2√2 ≈ 2.828. The violation ratio is √2. No explicit golden-ratio or base-60 constants appear in the abstract. | CONNECTION: The Tsirelson bound 2√2 relates to the octonionic/E8 structure only if the paper explicitly links geometric algebra to root systems — the abstract does not state this. However, 2√2 = √(2·2) and its square = 8, which is the dimension of the octonions and the rank of E8. The ratio √2 is a crystallographic symmetry element (rotation by 45° in 2D, and appears in the Weyl group of B2/C2). No 0.382, 0.618, 0.786, 1.618, or 2.618 appear in the evidence. | DEP Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com

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Andrew Stewart Caldin

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Andrew Stewart Caldin

FINDING: The CHSH inequality's maximal quantum violation (Tsirelson bound) is geometrically rooted in the qubit manifold, with the octahedral root system D3 encoding the measurement algebra. | MATH: CHSH operator $\mathcal{B} = \langle AB \rangle + \langle AB' \rangle + \langle A'B \rangle - \langle A'B' \rangle$ . Classical bound: $|\mathcal{B}| \leq 2$ . Quantum bound (Tsirelson): $|\mathcal{B}|_{\text{max}} = 2\sqrt{2} \approx 2.828$ . This equals $2 \times 1.414$ , where $\sqrt{2}$ is the diagonal of the unit square — the same ratio appearing in the D3 root system's long roots. The qubit manifold $\mathbb{CP}^1 \cong S^2$ carries the octahedral symmetry (24 elements, Weyl group of D3). | CONNECTION: $2\sqrt{2}$ relates to $1.618$ via $\sqrt{2} \approx 1.414$ , and $2.828/1.618 \approx 1.748$ , not a direct golden ratio. However, the D3 root system has 6 roots at 90° intervals (octahedron vertices), and the CHSH measurement directions in the optimal Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.comFINDING: The CHSH inequality's maximal quantum violation (Tsirelson bound) is geometrically rooted in the qubit manifold, with the octahedral root system D3 encoding the measurement algebra. | MATH: CHSH operator $ \mathcal{B} = \langle AB \rangle + \langle AB' \rangle + \langle A'B \rangle - \langle A'B' \rangle $. Classical bound: $ |\mathcal{B}| \leq 2 $. Quantum bound (Tsirelson): $ |\mathcal{B}|_{\text{max}} = 2\sqrt{2} \approx 2.828 $. This equals $ 2 \times 1.414 $, where $ \sqrt{2} $ is the diagonal of the unit square — the same ratio appearing in the D3 root system's long roots. The qubit manifold $ \mathbb{CP}^1 \cong S^2 $ carries the octahedral symmetry (24 elements, Weyl group of D3). | CONNECTION: $ 2\sqrt{2} $ relates to $ 1.618 $ via $ \sqrt{2} \approx 1.414 $, and $ 2.828/1.618 \approx 1.748 $, not a direct golden ratio. However, the D3 root system has 6 roots at 90° intervals (octahedron vertices), and the CHSH measurement directions in the optimal Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com

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Andrew Stewart Caldin

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Oct 6, 20260 citations

FINDING: Tsirelson bound is the maximal quantum violation of the CHSH inequality, equal to

2\sqrt{2}

, and recent work explores its algebraic structure via C*-algebra tensor products (Tsirelson pairs). MATH: CHSH inequality:

\langle AB \rangle + \langle AB' \rangle + \langle A'B \rangle - \langle A'B' \rangle \leq 2

(classical). Quantum bound:

2\sqrt{2} \approx 2.828

. Tsirelson's theorem: for any quantum observables

A, A', B, B'

with

\pm1

eigenvalues, the maximum is

2\sqrt{2}

. The ratio

2\sqrt{2} / 2 = \sqrt{2} \approx 1.414

. CONNECTION:

\sqrt{2}

is the diagonal of a unit square, linking to 2D Euclidean geometry and the root system

A_1 \times A_1

(or

D_2

). The ratio

1.414

is not a golden ratio (1.618) but appears in octonion norm and Clifford algebra structures. No direct link to 0.382, 0.618, 0.786, 2.618, or base-60. Crystallographic:

\sqrt{2}

appears in square lattice and body-centered tetragonal symmetries. DEPTH: 8 — Tsirels Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com

\mathcal{B} = \langle AB \rangle + \langle AB' \rangle + \langle A'B \rangle - \langle A'B' \rangle

. Classical bound:

|\mathcal{B}| \leq 2

. Quantum bound (Tsirelson):

|\mathcal{B}|_{\text{max}} = 2\sqrt{2} \approx 2.828

. This equals

2 \times 1.414

, where

\sqrt{2}

is the diagonal of the unit square — the same ratio appearing in the D3 root system's long roots. The qubit manifold

\mathbb{CP}^1 \cong S^2

carries the octahedral symmetry (24 elements, Weyl group of D3). | CONNECTION:

2\sqrt{2}

relates to

1.618

via

\sqrt{2} \approx 1.414

, and

2.828/1.618 \approx 1.748

, not a direct golden ratio. However, the D3 root system has 6 roots at 90° intervals (octahedron vertices), and the CHSH measurement directions in the optimal Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com