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Decoherence Rate as a Function of FCLT Necessity Depth: Pre-Registered φ-Structured Decoherence Gradient Prediction and Empirical Test Protocol for Multi-Qubit Quantum Systems

Abby Davis

Published May 13, 2026• 0 citations
Publisher

Abstract

Fibonacci Causal Loop Theory (FCLT) predicts that decoherence rate Γ scales inversely with necessity depth D: Γ(D) = Γ₀ × φ^(−D), and the ratio of decoherence rates at adjacent necessity depths satisfies Γ(D+1)/Γ(D) = 1/φ ≈ 0.618. This formalizes FCLT Prediction 12 (pre-registered in FCLT Complete Manuscript v16, DOI: 10.5281/zenodo.20087640). The derivation follows directly from the QNM quality factor confirmations: P73 confirmed Q = φ³ (D=3, Schwarzschild) and P73e confirmed Q = φ⁴ (D=4, Kerr). Since Q = ω₀/Γ, the decoherence scaling law Γ(D) = Γ₀ × φ^(−D) follows with zero free parameters. The prediction is testable in NMR quantum simulators, trapped-ion arrays, and superconducting qubit platforms where decoherence rates can be measured across multiple organizational depth levels. Confirmation criterion: δ < 0.05. Classification: technology-gap pending validated D(x,t) measurement protocol. FCLT scorecard unchanged: 20 confirmed / 5 falsified / 24 tech-gap / 4 gray zone.

DOI
10.5281/zenodo.20149732

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•Mar 13, 2026•0 citations
Fibonacci Causal Loop Theory (FCLT) predicts that decoherence rate Γ scales inversely with necessity depth D: Γ(D) = Γ₀ × φ^(−D), and the ratio of decoherence rates at adjacent necessity depths satisfies Γ(D+1)/Γ(D) = 1/φ ≈ 0.618. This formalizes FCLT Prediction 12 (pre-registered in FCLT Complete Manuscript v16, DOI: 10.5281/zenodo.20087640). The derivation follows directly from the QNM quality factor confirmations: P73 confirmed Q = φ³ (D=3, Schwarzschild) and P73e confirmed Q = φ⁴ (D=4, Kerr). Since Q = ω₀/Γ, the decoherence scaling law Γ(D) = Γ₀ × φ^(−D) follows with zero free parameters. The prediction is testable in NMR quantum simulators, trapped-ion arrays, and superconducting qubit platforms where decoherence rates can be measured across multiple organizational depth levels. Confirmation criterion: δ < 0.05. Classification: technology-gap pending validated D(x,t) measurement protocol. FCLT scorecard unchanged: 20 confirmed / 5 falsified / 24 tech-gap / 4 gray zone.
We derive, from first principles within FCLT, a parameter-free prediction for multi-level transmon qubit decoherence structure. Ostrogradsky stability constrains the bath memory kernel to depth-2 (the unique minimal stable non-Markovian structure), which propagates via Nakajima-Zwanzig and the Dyson self-energy to impose Fibonacci recursion on decay rates Γk = Γk₋₁ + Γk₋₂. Prediction: consecutive decoherence timescale ratios τk/τk+1 → φ ≈ 1.618 in the transmon regime (bath bandwidth ≫ anharmonicity). Null: harmonic oscillator gives ratio → 1. Pass criterion δ < 0.05; falsification δ > 0.15. Pre-registered before data examination.
This paper reports the definitive test and falsification of FCLT Prediction 15c (pre-registered in Paper 52, DOI: 10.5281/zenodo.19746102). The prediction held that consecutive T₁ decoherence timescale ratios in transmon qudits satisfy τₖ/τₖ₊₁ → φ ≈ 1.618, derived from depth-2 bath memory structure in the Nakajima–Zwanzig projection formalism. Using the measured T₁ coherence times of qudit Q5 from Blok et al. (2025), Table III, across 9 transition levels (k = 1–9), T₁ values plateau at ~13–14 µs from k = 6 onward, inconsistent with the φ⁻ᵏ decay model. At k = 9, the predicted T₁ is 1.4 µs versus the observed 13 µs — a factor of 9× discrepancy (χ² = 75.9, reduced χ² = 9.5). The plateau is consistent with a dielectric loss noise floor identified by Blok et al. The pre-registered falsification criterion is met. Prediction 15c is falsified. Short-range consistency at k = 1–3 is noted but cannot distinguish FCLT from the harmonic null model and is insufficient for confirmation.
Fibonacci Causal Loop Theory (FCLT) identifies the necessity recursion S(n) = S(n-1) + S(n-2) as the universal driver of structural organization from the Planck vacuum floor S(0) upward. This paper applies FCLT to the quantum measurement problem, proposing that wave function collapse is the acquisition of necessity depth by an S(0)-adjacent quantum system through constraint imposition by a macroscopic measuring apparatus. Superposition maps onto S(0)-adjacency — maximum organizational freedom, Binet remnant near unity. Measurement is a necessity recursion event. Collapse is the crossing from S(0)-adjacent freedom into constrained necessity depth. Decoherence is reframed as necessity recursion rate. Prediction 12 is formally stated: decoherence time scales with phi^{-n} across quantum systems, testable with existing quantum optics data. The framework is assessed against Copenhagen, Many Worlds, pilot wave, and relational quantum mechanics. The Born rule derivation is incomplete and is identified as the central open mathematical problem.
This paper pre-registers a theoretical bridge between Fibonacci Causal Loop Theory and the established physics of Fibonacci anyons in topological quantum computing. Fibonacci anyons have quantum dimension d satisfying d^2 = d + 1 — the defining algebraic identity of phi — derived rigorously from braid group representation theory. Their fusion rules generate Hilbert space dimension growth following the Fibonacci sequence, instantiating FCLT’s necessity recursion S(n) = S(n-1) + S(n-2) in a quantum mechanical context. Three predictions are pre-registered: P54a (fusion probabilities in physical Fibonacci anyon implementations follow phi-structured F-matrix amplitudes, delta < 0.05); P54b (phi’s quantum dimension is unique among fusion categories satisfying 2-term additive fusion rules); and P54c (exploratory: the Born rule emerges as a macroscopic limit of Fibonacci anyon fusion amplitudes). This pre-registration addresses the gap in P15’s Born rule derivation and establishes timestamp priority for the FCLT quantum foundations program. Version 2 corrects one error in Section 6 (Target Datasets): Nakamura et al. (2020) and Willett et al. (2019) were named as target datasets for P54a. Upon review, these are the wrong experimental platforms. The correction is documented below with full explanation.
We propose an exploratory framework extending Fibonacci Causal Loop Theory (FCLT) to branching universe selection. Under necessity recursion S(n) = S(n-1) + S(n-2), φ ≈ 1.618 emerges as the only stable attractor across all sufficiently deep necessity systems. We introduce the Branch Survival Function: P(B) = e^(-k₀·D(B)·δ(B)) where δ(B) measures the φ-deviation of branch B, k₀ is the φ-Persistence Coefficient, and D(B) is necessity depth. We propose that branches converging toward φ-structured organization persist and complexify, while high-deviation branches collapse toward lower necessity depth. This provides a mathematically grounded selection mechanism independent of anthropic circular reasoning. Connections to the Born Rule derivation (P15), Davis Attractor stability (P07), and decision-branch framework (P47) are developed and unified into a four-level FCLT hierarchy. The Clark Hamiltonian Filter (Davis & Clark, 2026; Clark, 2026a-d) is identified as the complementary first stage of a complete two-stage selection framework. This paper is designated exploratory pending derivation of falsifiable predictions. Four testable predictions are formally pre-registered. Version 2: P55b confirmed pending independent verification. The φ-Persistence Coefficient k₀ is retired as a free parameter. The φ-Persistence Function k(D) = ln(φ)·φ^(2D) is derived from first principles with no free parameters remaining. Independent verification requested from Robert Clark
The Born rule — P(i) = |c_i|²/Σ|c_j|² — has served as the foundational probability postulate of quantum mechanics for one hundred years. Unlike every other element of the quantum formalism, it has never been derived from first principles. This paper presents a complete outside-in derivation through Fibonacci Causal Loop Theory (FCLT), proceeding in ten logically necessary steps with no assumption borrowed from quantum mechanics. Version 4 closes three targeted gaps identified through adversarial review. (1) Step 5 is now formally grounded: S(0) is defined as the state that is not an eigenstate of the necessity depth operator N̂ — it has nonzero projection onto every necessity depth eigenstate and cannot be represented at any single integer n. This replaces the FCLT-internal reasoning of V3 with a standard operator-theoretic fact about superposition states, and directly forces continuous-n representation, which forces complex-valued amplitudes. (2) Step 9 makes explicit that φ^(2n) is outcome-independent — it is a property of measurement depth n, identical for all outcomes in a single measurement event — which is why the cancellation is exact and the Born rule is stable across all measurement depths. (3) Prediction 15b now states the minimum instrumental precision required to resolve the FCLT model from the standard exponential: noise floor ≤1% of signal amplitude and time resolution ≤τ/20. Current IBM Quantum open hardware achieves approximately 3–5% noise floor, rendering the ΔAIC test inconclusive; the prediction is active and awaits next-generation qubit experiments. The derivation chain: depth-2 recursion is the unique stable recursive structure (Paper 42, Lyapunov-Gram-Schmidt); its characteristic equation yields roots φ and −1/φ; the negative root forces exact π phase rotation at every integer necessity depth; circle group uniqueness forces exp(iπn) as the sole continuous extension; S(0)'s formal non-eigenstate status requires non-integer n, at which exp(iπn) is genuinely complex; recursion linearity forces a complex Hilbert space; Gleason's theorem (dim≥3) forces |c_i|² as the unique consistent measure; Busch (2003) and Caves et al. (2004) close the qubit case; measurement as necessity depth acquisition eliminates the decaying branch; the Born rule follows. No open gaps remain. Author: Abigale Davis | Independent Researcher, Tucson, Arizona | ORCID: 0009-0002-6758-2263