This paper extends the two-boundary obstruction programme into an explicit four-dimensional Schrödinger benchmark and asks a narrower question than the companionreduced-testbed paper: when a four- dimensional quasiperiodic model is comparedagainst matched roughness nulls, does the obstruction decomposition distinguish thequasiperiodic case by scalar defect magnitude or by nodal morphology? Forward andbackward histories are generated by split-step Schrödinger propagation for free, barrier,and quasiperiodic configuration-space models, and the four-dimensional obstructionfield˜Dnumα = (A+ B) + αΞi + (1−α)Ξf is evaluated on those histories. The first result is algebraic: the full reconstructionremains at machine precision in four dimensions, with relative residuals of order 10−15.The second result is comparative: in a 100-seed matched-null ensemble at α= 0.50, thequasiperiodic case does not exceed the nulls in obstruction-only residual or active nodalfraction. The surviving signal is instead topological morphology. Relative to matchedroughness, the quasiperiodic benchmark yields fewer nodal-sheet components, a lowernode-normalized fragmentation index, and a lower threshold-persistence componentcount. A larger-lattice 204 check using the actual nodal-overlap mask confirms the samedirection while rejecting an axis-spanning interpretation for the original localized-statesetup: the strict x- and w-spanning metrics remain zero for both the reference and all24 larger-lattice nulls. A broader boundary-state scan then shows that spanning can beinduced by sufficiently broad face-to-face states, but that most overlap-mask spanning isgeometry-driven and reproduced by matched nulls. One limited candidate does survivea dedicated 50-null follow-up: for a broad face-to-face x-state under the interferencemask, the quasiperiodic reference shows weak but nonzero strict spanning persistenceand larger continuous span scores than the null ensemble. A final cubical-homology check then shows that this surviving spanning candidate is not handle-rich: it spansthrough a comparatively simple foreground with lower b1 + b2 + b3 than the matchednull mean. The bounded conclusion is therefore not that quasiperiodicity amplifiesscalar obstruction in four dimensions, but that in this exploratory configuration-spacebenchmark it is associated primarily with reduced nodal-sheet fragmentation and, underone specific broadened boundary geometry, with limited interference-mask spanningrelative to matched roughness, without evidence of excess topological redundancy.
This paper extends the two-boundary obstruction programme into an explicit four-dimensional Schrödinger benchmark and asks a narrower question than the companionreduced-testbed paper: when a four- dimensional quasiperiodic model is comparedagainst matched roughness nulls, does the obstruction decomposition distinguish thequasiperiodic case by scalar defect magnitude or by nodal morphology? Forward andbackward histories are generated by split-step Schrödinger propagation for free, barrier,and quasiperiodic configuration-space models, and the four-dimensional obstructionfield˜Dnumα = (A+ B) + αΞi + (1−α)Ξf is evaluated on those histories. The first result is algebraic: the full reconstructionremains at machine precision in four dimensions, with relative residuals of order 10−15.The second result is comparative: in a 100-seed matched-null ensemble at α= 0.50, thequasiperiodic case does not exceed the nulls in obstruction-only residual or active nodalfraction. The surviving signal is instead topological morphology. Relative to matchedroughness, the quasiperiodic benchmark yields fewer nodal-sheet components, a lowernode-normalized fragmentation index, and a lower threshold-persistence componentcount. A larger-lattice 204 check using the actual nodal-overlap mask confirms the samedirection while rejecting an axis-spanning interpretation for the original localized-statesetup: the strict x- and w-spanning metrics remain zero for both the reference and all24 larger-lattice nulls. A broader boundary-state scan then shows that spanning can beinduced by sufficiently broad face-to-face states, but that most overlap-mask spanning isgeometry-driven and reproduced by matched nulls. One limited candidate does survivea dedicated 50-null follow-up: for a broad face-to-face x-state under the interferencemask, the quasiperiodic reference shows weak but nonzero strict spanning persistenceand larger continuous span scores than the null ensemble. A final cubical-homology check then shows that this surviving spanning candidate is not handle-rich: it spansthrough a comparatively simple foreground with lower b1 + b2 + b3 than the matchednull mean. The bounded conclusion is therefore not that quasiperiodicity amplifiesscalar obstruction in four dimensions, but that in this exploratory configuration-spacebenchmark it is associated primarily with reduced nodal-sheet fragmentation and, underone specific broadened boundary geometry, with limited interference-mask spanningrelative to matched roughness, without evidence of excess topological redundancy.
This paper develops a geometry-first account of quantum transport in which admis- sible local flow is constrained by the nodal and phase structure of a two-boundary wave field. The central quantitative device is the power-family density˜ ρα ∝ρα i ρ1−α f together with an obstruction decomposition of the numerically computed log-transport defect into an irreducible geometric term A, a density-reweighting term B, and weighted one- boundary correction fields. Two benchmark models were examined: a driven anisotropic harmonic packet mismatch (Model A) and a double-slit barrier with a postselected detector packet (Model B). In Model A the representative density scan has a sharp optimum at α= 0.2, reducing max Enat from 3.377 ×10−1 at α= 1/2 to 1.740 ×10−1 . In Model B the optimum is shallow near α= 0.5 and the minimum remains high, with max Enat = 6.516 ×10−1. Across both models, the full field (A+ B) + αΞi+ (1−α)Ξf reconstructs the computed defect to machine precision, with peak relative residuals of order 10−16, while the obstruction-only comparison remains O(1). The numerical evidence therefore distinguishes negotiable smooth mismatch from hard obstruction within the tested transport representation and supports a sharpened admissibility frame- work. A reservoir-like interpretation is presented only as a conjectural extension: the established result is the exact obstruction decomposition and its contrasting behaviour across smooth and interference-dominated geometries.
This document develops a mathematical framework for two-boundary quantum admissibility. Given initial and final wave fields ψi = √ρieiSi/ℏ and ϕf= √ρfeiSf /ℏ , one asks when an intermediate local support structure is compatible with both boundary data. The central diagnostic is the log-transport defect of a power-family density ρα = ρα i ρ1−α f transported by the symmetrized velocity v = (ui + uf)/2. 1This defect decomposes exactly into an irreducible geometric obstruction, a density- reweighting channel, and one-boundary continuity residuals. The scalar parameter α is thereby recognized not as the whole theory, but as the first repair test. Scalar reweighting removes only a one-dimensional projection of the geometric-mean defect. Promoting α to a local field α(x,t) converts the repair problem into a first-order transport equation, and failure of that equation gives a stronger form of obstruction. Finally, nodal winding mismatch TC = m 2πℏ C(ui−uf)·dℓ= ni(C)−nf(C) is invariant under scalar and local density reweightings, yielding a non-reweightable topological obstruction. The framework lifts naturally to configuration space, where physical event succession is described by admissible support connectivity rather than by ordinary- space path continuity. Classical trajectories arise as narrow projected support tubes, while quantum nonclassicality appears when admissible connectivity persists in configuration space although its ordinary-space projection is broad, thresholded, or coarse-grained. Coherence dynamics and holonomy sectors are discussed as extensions of the admissibility hierarchy rather than as part of its theorem-level core.
This paper develops a mathematical framework for two-boundary quantum admissibility. Given an initial wave field ψi = √ρiexp(iSi/ℏ) and a final, post-selected, or backward-evolving effect wave field ϕf= √ρf exp(iSf/ℏ), the central question is not merely where both amplitudes are non-zero. The question is whether an intermediate support structure can simultaneously satisfy the transport requirements imposed by both boundaries. The framework introduces a log-transport defect Dα associated with the power-family density ρα = ρα i ρ1−α f transported by the symmetric boundary velocity v= (ui+uf)/2. The defect admits an exact decomposition into an irreducible geometric obstruction, a density-reweighting channel, and one-boundary continuity residuals. This decomposition generates a hierarchy of repair classes ranging from global density reweighting through local density repair and finally to topological obstruction characterized by nodal winding mismatch. The framework lifts naturally from ordinary space to full configuration space, where the primary object is not a trajectory but a connected component of low-obstruction support. These components, termed admissible support tubes, provide a geometric description of conditional event connectivity under two-boundary constraints. The framework does not modify the Born rule, does not introduce hidden signalling, and does not identify weak values with literal particle trajectories. It proposes a diagnostic geometry for conditional quantum support based on exact transport compatibilit
This paper studies the fixed-background many-body extension and the Wallstrom obstruction within the scalar density-phase framework of capacity geometry. Within the same local first-order homogeneous density-phase action class as the general scalar forcing theorem, the forcing argument extends immediately to declared configuration-space backgrounds and yields the standard spinless many-body Schrödinger equation without any factorisation ansatz. The bare density-phase equations do not force Wallstrom quantisation: a punctured-disc family gives explicit finite-action counterexamples, and the sharpened locallocking relation reduces that family only continuously, not integrally. The strongest continuum closure theorem is a domain-selection statement: on the intrinsic nonvanishing complex-field domain the forced action is the Schrödinger action, Wallstrom counterexamples are excluded, and circulation quantisation is automatic by degree theory. What remains open is whether the SGOC construction selects that single-valued complex domain rather than only the larger density-phase representation. A second contribution is a precise theorem map for the discrete carrier-transport approach. Native phase-sensitive SGOC data live on the Fourier/triad skeleton, while the discrete Wallstrom problem needs carrier data on a spatial triangulation of a nodal-complement component. The missing theorem is a genuine native-to-carrier transport theorem. On closed orientable surface carriers the remaining cases split into three transport regimes. Once a global carrier edge-phase field exists, the total-curvature scalar obstruction vanishes automatically by simplicial Stokes; once non-flat support is confined to a proper carrier,homology-killing enlargement and relative H^1 complement globalisation handle the rest of the downstream topology. Selector-side reductions are also consolidated. Before localisation, the remaining selector-side existence content is one universal H^2 transgression class. After localisation to a proper carrier, existence of a strong completion is automatic, and the only surviving noncanonical part is the ambient surface period torsor — an affine A^{2g}-torsor on genus g — with complement residues canonically separated off. Exchange sectors and spin are additional topological or multicomponent input, not outputs of the present scalar variational route. Keywords: - Schrödinger equation - Capacity geometry - Wallstrom obstruction - Many-body quantum mechanics - Madelung equations - Circulation quantisation - Domain selection - Carrier transport - SGOC programme Related identifiers (references cited in this paper): - 10.5281/zenodo.19156067 (cites) — Capacity Geometry: REG, Dirichlet Tension, and Quasi-Local Mass (SGOC Volume 2, Part 1) - 10.5281/zenodo.19156316 (cites) — The Canonical Capacity Coordinate and the Unique Quadratic Tension in the Capacity Gauge (Part 1A) - 10.5281/zenodo.19189901 (cites) — The Schrödinger Equation from Capacity Geometry: General Forced-Action Theorem on a Fixed Capacity Background - 10.5281/zenodo.19259771 (cites) — Radial Surcharge Inversion and Free-Boundary Host Selection - 10.5281/zenodo.19267944 (cites) — Free-Boundary Surface Selection for a First-Order Nonlinear Profile Equation in Three Dimensions Related identifiers (external references): - 10.1103/PhysRevA.49.1613 (cites) — Wallstrom, T. C., "Inequivalence between the Schrödinger equation and the Madelung hydrodynamic equations," Physical Review A 49(3) (1994), 1613–1617
This paper develops a reduced transport-obstruction testbed designed to stress the obstruction decomposition introduced in the companion admissibility manuscript. The goal is not to simulate quantum measurement in full, but to determine whether the same decomposition remains diagnostically useful when failure modes are deliberately separated. A phase-adaptive dual-vortex braid evolves against a deformable background under six conditions, including a no-crisis control: amplitude attenuation, smoothed phase null, phase-jitter projector failure, memory wipe, and phase-jitter plus memory wipe. Across a 20-seed ensemble and an α sweep {0.10,0.20,0.35,0.50,0.65,0.80,0.90}, the full field (A+B)+αΞi+(1−α)Ξf reconstructs the numerically computed transport defect to machine precision, with worst residuals of order 10−15. Uniform amplitude attenuation remains essentially invisible to the normalized diagnostic, while phase-jitter failure produces the largest immediate control-subtracted defect shock and memory wipe produces the strongest sustained post-crisis deviation. A second normalization by sector control norms reveals selective excitation: phase corruption is A-dominated, memory wipe is Ξi-dominated, and the combined crisis inherits both. Control-subtracted sector maps show that these distinctions are not merely scalar; they have spatial morphology. Finally, a boundary-swap control shows that the memory signature exchanges Ξi ↔Ξf under boundary-label exchange, while the phase-jitter signature remains A-dominated. Thereducedtestbedthereforesupportsaboundedbutsubstantiveclaim: theobstruction decompositionisnotmerelyexact; itisdiagnosticallygeometry-sensitive, sector-resolved, and role-aware.
A downstream memory cannot freeze, replay, or increase the information content of a high-energy collision after detector transduction. We prove this claim using contractivity of trace distance under completely positive trace-preserving maps: once two collision states have become indistinguishable in the detector record, no later optical buffer can restore their distinguishability. The scientifically admissible question is therefore narrower: can an alreadytransduced, bandwidth-matched optical pulse be stored and retrieved more effectively in a periodic, quasiperiodic, or explicitly driven memory medium under controlled disturbances? We formulate a preregisterable bench-scale benchmark with matched optical depth, input spectrum, control power, and disturbance history. The memory is treated as an open quantum channel governed by Maxwell–Bloch or Lindblad dynamics; performance is assessed by retrieval efficiency, waveform or state fidelity, added noise, storage time, bandwidth, and time-bandwidth product. We distinguish quasiperiodic localization from topological protection and prove a Floquet no-go: for a single scalar cosine drive, the leading van Vleck commutator vanishes, so a first-order Floquet gap cannot be inferred. A nonzero first-order correction requires at least two noncommuting drive quadratures. A reproducible nine-site single-excitation design study compares periodic, quasiperiodic, and matched-random detuning patterns under equal loss and dephasing. For the predeclared normalized integrated return probability over 0 ≤ t ≤ 20J−1, the uniform baseline is 0.247. The best scanned median values are 0.379 for periodic modulation, 0.391 for quasiperiodic modulation, and 0.384 for a matched-random null. Their replicate intervals overlap strongly. The toy model therefore shows that static modulation can suppress coherent leakage in some regimes, but it does not establish quasiperiodic specificity, topological protection, an LHC advantage, or a quantum-memory implementation. The admissible near-term result is a blinded comparative bench test, not “frozen collision dynamics” and not an LHC detector upgrade. Frozen claim boundary. This manuscript does not claim that a quantum buffer stores the original collision state; that delayed readout increases detector time resolution; that an Aubry–André potential is automatically topological; that localization necessarily improves coherence; that a scalar Floquet drive opens a leading-order gap; that NV centres are qualified for an LHC radiation environment; or that the synthetic design study predicts laboratory performance. It establishes no-go results, a controlled open-system benchmark, and a matched-null simulation that defines what must be demonstrated before stronger claims are admissible.