Field-Transport Trajectory Framework (FTTF): Four connected manuscripts on transport, actualization, radiative feeding, matched-threshold measurement, and joint matter-radiation transport channels

This record contains a four-paper sequence developing the Field-Transport Trajectory Framework (FTTF), a field-first approach to quantum trajectories, radiative processes, and measurement. Across the series, the central idea is that current-derived trajectories can be retained as channels of wave or field transport without assuming permanently occupied microscopic particle paths, while localized outcomes are treated as later event-forming actualizations rather than automatic consequences of interaction, decoherence, coupling, or radiative feeding. The sequence is architectural and phenomenological rather than a completed replacement for standard quantum theory.

Paper I, Trajectories without Occupied Bohmian Particles, Detector Actualization, and a Conditional Lag Test, introduces the basic framework in the nonrelativistic setting. It preserves the usual current-based transport geometry but reinterprets it in field-first terms, and proposes that interaction, decoherence, and detector actualization should be treated as distinct stages. Its main empirical target is a two-path interferometer with tunable which-path probes, where the framework predicts a possible regime in which unconditional visibility loss begins before genuine branch-click events become common, while the no-click conditioned subensemble still exhibits two-channel transport.

Paper II, Dirac hydrogen, coherent bound-state change, the 2p → 1s channel, and photon actualization, extends the framework to hydrogen in a Dirac-field setting. It distinguishes bound-state geometry from transport geometry, introduces transition current as the carrier of coherent bound-state reorganization, and develops the 2p → 1s channel as a benchmark radiative case. Standard spontaneous-emission dynamics are retained at the microscopic level, while the framework proposes a further event layer that separates radiative feeding from photon actualization.

Paper III, Resonant Thresholds, Channel-Matched Actualization, and Structured-Environment Tests of Measurement, develops a more specific and testable refinement of the event layer. Instead of treating actualization as a bare scalar threshold, it proposes that durable outcomes arise when pre-event feeding becomes sufficiently matched to a detector or environmental mode capable of record-forming stabilization. The paper formulates this as a matched-threshold law and proposes experimental tests in structured photonic environments, circuit-QED systems, interferometric detector-mode scans, and resonant atom-cloud platforms.

Paper IV, Joint Matter-Radiation Transport Channels, Cross-Current Geometry, Resonant Channel Embedding, and No-Event Conditional Tests, extends the framework to coupled matter-radiation systems. It asks how pre-event channels should be represented when matter and radiation are strongly or selectively mode-coupled, and introduces a joint transport-channel description based on local overlap geometry, integrated coherent coupling, and transport-channel embedding. The paper distinguishes local field-overlap density from rate-level coupling, develops coherent and geometric embedding indices, and proposes a rate-matched, geometry-different side-channel threshold-lag test. Its empirical anchors include cavity-QED calibration logic and Steinberg-type transmitted-photon excitation measurements, treated cautiously as promising conditional-trace benchmarks rather than proof of new physics without access to raw data.

Taken together, the four manuscripts propose a layered program separating transport, coherent bound-state change, radiative feeding, channel matching, joint matter-radiation embedding, and actualization. The central experimental question across the series is whether these layers can be separated operationally in regimes where standard open-system dynamics, quantum trajectories, weak-measurement theory, and calibrated detector response provide strong conventional null models.