Empirical Characterization of an Autonomous Accessibility Flow: A Universal β-Function and Continuous IR Fixed-Point Spectrum from Out-of-Time-Order Correlators
First release of Paper III, Kaelion OTOC KB series. Universal β-function β = −c Ω(1−Ω) confirmed across 11 quantum many-body models (slope=1.003, χ²/dof=1.11, p=0.31). Continuous IR fixed-point spectrum c ∈ [0.17, 4.30]. Pre-registered prediction c ∈ [1,4] confirmed with c = 3.41 ± 0.48 for power-law coupling J(r)=1/r. Companion papers: Paper I: https://zenodo.org/records/18752608 Paper II: https://zenodo.org/records/19105623
First release of Paper III, Kaelion OTOC KB series. Universal β-function β = −c Ω(1−Ω) confirmed across 11 quantum many-body models (slope=1.003, χ²/dof=1.11, p=0.31). Continuous IR fixed-point spectrum c ∈ [0.17, 4.30]. Pre-registered prediction c ∈ [1,4] confirmed with c = 3.41 ± 0.48 for power-law coupling J(r)=1/r. Companion papers: Paper I: https://zenodo.org/records/18752608 Paper II: https://zenodo.org/records/19105623
Data, simulation code, and figures for: "Spatial Scrambling Profiles and System-Size Scaling of the Scrambling Residual Ω across Dynamical Regimes: Exact Simulation and Cross-Platform Quantum Hardware Validation" E. F. Perez-Eugenio (2026) This repository contains exact statevector simulations (N=4-18) of five dynamical models (KI chaotic, KI mixing, KI integrable, KI dual-unitary, SYK-inspired), cross-platform quantum hardware measurements (IBM Heron, Rigetti Ankaa-3, AQT IBEX Q1), and analysis scripts for the Ω scrambling diagnostic. Key results: spatial scrambling profiles Ω(r), 15× ion trap fidelity advantage over superconducting hardware, and first empirical characterization of an autonomous accessibility flow from quantum hardware. Companion to Paper I: https://doi.org/10.5281/zenodo.18752608
See also: [Unified Evolution Equation] New Preprint URL: https://zenodo.org/records/23778957 New Preprint DOI: 10.5281/zenodo.23778957 [Deriving the Area-Term Cancelling Operator] New Preprint URL: https://zenodo.org/records/23779273 New Preprint DOI: 10.5281/zenodo.23779273 [Information Flux Theory] New Preprint URL: https://zenodo.org/records/23779526 New Preprint DOI: 10.5281/zenodo.23779526 [Stationary Fluid Field] New Preprint URL: https://zenodo.org/records/23682365 New Preprint DOI: 10.5281/zenodo.23682365 [Description] From Point Contacts to Quantum ProbabilitiesUEE 03: From Point-Contact Mechanics to the Unified Evolution EquationConstruction of Deterministic Contacts, Persistent Transport, and a Statistical Quantum Description 1. Concept: connecting local contacts to observable physics A pattern can move through a sequence of fixed points as neighboring points pass their internal states to one another. In a simple three-point example, a phase marker is transferred from the first point to the second and then to the third. The background points remain fixed while the marker advances. UEE_03 develops a route from such local contacts to persistent information patterns, transport, quantum-state evolution, and the probabilities recorded by an apparatus. Here, “information” means physical internal records, such as phase, orientation, and density. Point-Contact Mechanics (PCM) specifies how the states of two neighboring points change during a contact. The Unified Evolution Equation (UEE) combines the motion of patterns, internal evolution, and exchange with the environment within a common description of time evolution. The paper asks what must be preserved and supplied to connect these descriptions: clocks, preparation rules, transport, and measurement. Its purpose is to turn a microscopic contact model into calculations that can be compared with observations. 2. Basic design: histories, occupation, and quantum states An individual history requires initial records for the background, source, environment, and apparatus, together with a contact order. Information travel, processing, and waiting times are also specified. Once these inputs are fixed, the history is deterministic. Repeated preparations carry a distribution over complete initial records. Propagating this distribution through the contact updates and apparatus readout gives outcome probabilities. Deterministic histories and statistical observations thus enter at different stages of the same construction. The transition to a continuous description distinguishes three ingredients: • Occupation: where the selected pattern exists and how much is present.• Complex amplitudes: magnitudes and relative phases used to describe interference.• Quantum states: normalized states from which position and internal measurement probabilities are calculated. The total physical occupation is retained when the quantum state is normalized. A direction of flow, speed, clock, and boundary conditions then define occupation-preserving transport. Complex preparations and apparatus rules supply the additional structure needed for interference and measurement backaction. This separation makes it possible to track which quantities come from contact records and which inputs establish their connection to a quantum description. 3. Evolution: transport, internal change, and environmental memory The UEE combines transport, internal rotation, and environmental exchange on a common clock. The paper gives conditions under which their combination defines an evolution preserving valid quantum states and total probability. Environmental phase changes are described through joint statistics for the internal components affected by a contact. This keeps the predicted loss of interference consistent across the whole state. Revisiting an environment is especially important. Under conditions such as independent preparations of fresh environments and independent contacts at a fixed mean rate, the construction connects to memoryless evolution. A return to a previously visited environment can instead retain records and backaction from earlier interactions. Consequently, the same mean contact frequency can lead to different responses when the interaction history changes. The paper identifies the physical preparation assumptions behind the resulting measurement and dissipation equations. 4. Worked example: internal relaxation with continuing circulation The central example combines a pattern circulating around a circle on a sphere with a two-level internal system. Position readout asks whether the pattern lies within a chosen interval; internal readout distinguishes two outcomes. Internal rotation competes with environmental dephasing. Under the specified conditions, the two internal probabilities approach equal values while the spatial pattern continues to circulate. The example makes the distinction between internal relaxation and spatial transport tangible. One preparation supplies position-window probabilities, internal populations, and the four outcomes of a joint position–internal measurement. Analytical formulas are compared with finite-matrix calculations. The treatment distinguishes errors from splitting the evolution into short steps, restricting the number of modes, and approximating discrete contacts by continuous transport. In this example, explicit contact records supply conserved occupation and transport. Maps implementing complex preparations, internal coupling, environment updates, and the apparatus within the same physical realization remain additional conditions. Their place in the construction is stated explicitly. 5. Physical extensions: persistence, zero area, and comparison with observations Understanding a persistent pattern also requires phase winding, defect motion, and an energy balance. The paper connects integer contact records to histories of fields along the edges between points, allowing actual winding and defect changes to be tracked. Retention energy is evaluated using a specified field action and work exchanged at boundaries. Zero-area resonance forms another part of this connection. A mathematical line has zero area but can carry finite occupation and transport. The analysis distinguishes contributions associated with boundary area, flux concentrated at intersections, and information in localized states. Under specified regularity or capacity conditions, it identifies vanishing information-area coefficients while accounting separately for remaining occupation and correlations. Extensions to electromagnetism, fluids, and gravity require further physical inputs. Electromagnetic models use a connection for comparing phases and a constitutive action. Fluid models require averaging, closure, and control of approximation errors. Gravitational models require geometry and the total stress of matter, fields, and the environment. These inputs define responses that can be compared within each construction. The paper also distinguishes internal update speeds, pattern transport, and the time at which an external receiver can distinguish a change in the source. An upper bound c on observable signal speeds is treated as a condition to check across the information paths and receiver coupling. Validation compares responses at times, windows, phases, or source configurations beyond those used for calibration. Detector response, statistical variation, and theoretical approximation errors are included. The contribution is a construction and a procedure for testing its connections to observation. 6. Place in the series and reading guide UEE_01 develops the analytical foundations of the Unified Evolution Equation. UEE_02 focuses on zero-area resonance transport, and UEE_05 presents the broader Information Flux Theory framework. UEE_08 develops the physical hypothesis of point contacts between background particles. UEE_03 provides the connecting construction. At each stage—from contact histories to persistent transport, quantum states, and apparatus records—it identifies the results obtained and the additional inputs required. Readers can enter through the sections closest to their interests: • Physical picture and overall construction: Section 1.• Deterministic contacts, persistent patterns, occupation, and continuous transport: Sections 2–4.• Quantum states, measurement, contact statistics, and environmental memory: Sections 5–6.• The full UEE and conditions for its solutions: Section 7.• Phase winding, retention energy, zero area, and information: Sections 8–10.• Worked observations, physical connections, and testable questions: Sections 11–12. The paper offers a sequence of constructions, examples, and conditions for readers who want to follow local update rules through to probabilities counted by an experimental apparatus.
The out-of-time-ordered correlator (OTOC) is central to the understanding of information scrambling in quantum many-body systems. In this work, we show that the OTOC in a quantum many-body system close to its critical point obeys dynamical scaling laws which are specified by a few universal critical exponents of the quantum critical point. Such scaling laws of the OTOC imply a universal form for the butterfly velocity of a chaotic system in the quantum critical region and allow one to locate the quantum critical point and extract all universal critical exponents of the quantum phase transitions. We numerically confirm the universality of the butterfly velocity in a chaotic model, namely, the transverse axial next-nearest-neighbor Ising model, and show the feasibility of extracting the critical properties of quantum phase transitions from OTOC using the Lipkin-Meshkov-Glick model.
Data, simulation scripts, and manuscript for Paper V of the Kaelion OTOC KB series. We report a logarithmic dependence of the OTOC late-time scaling exponent c on effective surface gravity κ across two independent quantum many-body models: a static SYK model at finite temperature (κ = 2πT) and a Bose-Hubbard chain with a sonic horizon (κ_sonic). The central empirical result is c = a·ln(κ) + b with R² = 0.997 (SYK) and R² = 0.988 (BH sonic), favored over c ∝ 1/κ with ΔAIC = +15.6 (OLS). The logistic β-function β(Ω) = −cΩ(1−Ω) uniquely produces AdS₂ geometry in the IR, with closed-form scalar curvature R(Ω) = −2 + 12Ω(1−Ω). Run scripts/verify_reproduction.py to confirm all key results from the authoritative JSON data files.
Papers I and II derived gravitational geometry and second-order dynamics from finite accessibility without invoking measurement, observation protocols, or collapse as primitive notions. This paper extends the operational program to the measurement sector, deriving the structure of record formation and probabilistic weights from the same finite accessibility and compositional constraints. Finite accessibility restricts admissible operations on a subsystem to a proper operator subalgebra. Because bounded certification excludes operators requiring nonlocal coordination or arbitrarily fine phase resolution, the accessible algebra is strictly smaller than the full operator algebra. When a system becomes correlated with orthogonal environment sectors, off-diagonal operators between those sectors fall outside the accessible algebra. The reduced state is therefore indistinguishable, under all admissible operations, from its diagonal ensemble. Definiteness emerges as an algebraic consequence of sector restriction, not as a collapse postulate. The weights of these sectors are fixed uniquely by compositional consistency. Phase invariance, multiplicativity under independent refinement, and stability under record coarse-graining constrain any admissible assignment of sector weights to satisfy a functional equation whose only continuous, non-contextual solution is quadratic in amplitude. The Born rule therefore arises as the unique invariant measure compatible with finite accessibility. Irreversibility follows from action scaling: reversal requires operators outside the admissible tensor algebra and incurs action cost proportional to the number of correlated subsystems. Since admissible operations are bounded by the action gap, macroscopic record reversal is excluded. Measurement introduces no new physical primitives beyond finite accessibility, locality, and compositional stability. Record formation, classical definiteness, and Born probabilities are structural consequences of algebraic restriction under finite accessibility. **This paper is part of the Finite Accessibility series, which reconstructs gravitational geometry, quantum dynamics, gauge structure, cosmological perturbation theory, and the dark sector from a single operational primitive: a finite certification ceiling ω* governing the maximum rate at which physical relations can be maintained across extended domains.** **Introductory papers** - Geometric Limits to Coherent Timekeeping in Extended Reference Frames — https://doi.org/10.5281/zenodo.18824556 - Accessibility Selection Law (ASL) — https://doi.org/10.5281/zenodo.18824649 - Phase Boundary Gravity — https://doi.org/10.5281/zenodo.18824707 **Pillars (numbered I–IV)** - Paper I: Deriving Gravitational Geometry and Schrödinger Dynamics from Finite Accessibility — https://doi.org/10.5281/zenodo.18601600 - Paper II: Deriving Inertia, Motion, and Wave Propagation from Finite Accessibility — https://doi.org/10.5281/zenodo.18625174 - Paper III: Accessible State Spaces, Record Stability, and the Emergence of Quantum Statistics — https://doi.org/10.5281/zenodo.18625192 - Paper IV: Frame Dissolution, the Certification Ceiling, and Observable Deformations — https://doi.org/10.5281/zenodo.18654458 **Extension papers** - Dark Matter from Finite Accessibility — https://doi.org/10.5281/zenodo.18654433 - Dark Energy from Finite Accessibility — https://doi.org/10.5281/zenodo.18654523 - No-Go Theorems and the Admissibility Corridor — https://doi.org/10.5281/zenodo.18654493 - Gauge Structure from Finite Accessibility — https://doi.org/10.5281/zenodo.18928152 - Perturbation Theory from Finite Accessibility — https://doi.org/10.5281/zenodo.18928213 **Experimental paper** - Experimental Probes of Finite Accessibility: GW Dispersion and Vacuum Path Independence — https://doi.org/10.5281/zenodo.18931126 **Keywords:** Born rule derivation, measurement problem, quantum statistics, finite accessibility, operator subalgebra, record formation, definiteness emergence, wave function collapse, compositional consistency, accessible state spaces, action gap, irreversibility, sector restriction, quantum foundations, algebraic quantum mechanics, decoherence
We propose a spectrum-first framework for classifying dynamical regimes of quantum channels. By tracking the eigenvalue geometry of a CPTP map in a representation such as the Pauli transfer matrix (PTM), we obtain coordinate-free signatures of relaxation, damped oscillations, metastability, and regime transitions. We define spectral bifurcations for smooth channel families and outline an experimentally testable protocol using process tomography. Finally, we state explicit falsifiable predictions and clearly separate established results from plausible and speculative cross-domain analogies. Logical development of this article: https://zenodo.org/records/17914795