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Relational Composite Quantum Mechanics: An Information-Theoretic Interpretation Based on Local Observer Consistency

Abel Liu

Published Jul 24, 2026• 0 citations
Publisher

Abstract

We propose a new interpretation of quantum mechanics, the core idea of which is that quantum superposition states are not mysterious physical entities, but rather the joint distribution of classical information obtained by local observers in a composite system. We assume that all systems are equivalent, and there is no fundamental distinction between "observer" and "observed". When multiple local observers independently observe the same system, if their observation results agree, the composite observer obtains a classical particle-like fact; if their observation results diverge, the composite observer obtains quantum wave-like behavior (a superposition state). We demonstrate that this "persuasion theory"—namely, that only when local observers reach an agreement can they persuade the composite observer—can naturally derive the formalism of quantum mechanics and perfectly explain the wave-particle duality in the double-slit interference experiment. This theory interprets quantum mechanics as a theory concerning the classical information mutually possessed by physical systems and their compositional relationships, and this description is complete.

DOI
10.5281/zenodo.21521997

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We propose a new interpretation of quantum mechanics, the core idea of which is that quantum superposition states are not mysterious physical entities, but rather the joint distribution of classical information obtained by local observers in a composite system. We assume that all systems are equivalent, and there is no fundamental distinction between "observer" and "observed". When multiple local observers independently observe the same system, if their observation results agree, the composite observer obtains a classical particle-like fact; if their observation results diverge, the composite observer obtains quantum wave-like behavior (a superposition state). We demonstrate that this "persuasion theory"—namely, that only when local observers reach an agreement can they persuade the composite observer—can naturally derive the formalism of quantum mechanics and perfectly explain the wave-particle duality in the double-slit interference experiment. This theory interprets quantum mechanics as a theory concerning the classical information mutually possessed by physical systems and their compositional relationships, and this description is complete.
This project presents a conceptual reinterpretation of wave–particle phenomena in quantum experiments by introducing a relational-temporal perspective on measurement and event formation. Rather than treating wave-like and particle-like behavior as competing ontological properties of quantum entities, the framework distinguishes between extended relational amplitude structures and localized measurement events. Interference phenomena are interpreted as manifestations of relational structures distributed across spacetime, while particle detections are understood as temporally stabilized events emerging through measurement interactions. By reviewing key experimental paradigms—including double-slit interference, which-path experiments, quantum erasers, weak measurements, and decoherence—the study demonstrates that many apparent paradoxes of quantum mechanics arise from classical assumptions about intrinsic properties and time as an external background parameter. Without modifying the formalism of quantum theory, the relational-temporal interpretation offers a physically conservative framework that reframes wave–particle duality as a distinction between structure and event rather than a dual ontology of physical objects.
We reformulate the problem of the "interpretation of quantum mechanics" as the problem of DERIVING the quantum mechanical formalism from a set of simple physical postulates. We suggest that the common unease with taking quantum mechanics as a fundamental description of nature could derive from the use of an incorrect notion, as the unease with the Lorentz transformations before Einstein derived from the notion of observer independent time. Following an an analysis of the measurement process as seen by different observers, we propose a reformulation of quantum mechanics in terms of INFORMATION THEORY. We propose three different postulates out of which the formalism of the theory can be reconstructed; these are based on the notion of information about each other that systems contain. All systems are assumed to be equivalent: no observer-observed distinction, and information is interpreted as correlation. We then suggest that the incorrect notion that generates the unease with quantum mechanichs is the notion of OBSERVER INDEPENDENT state of a system.
Quantum mechanics reveals that physical quantities and informational states are not absolute but relational, depending on the context of interaction between systems. While classical physics already contained relational elements—most clearly in Galilean relativity and Einstein’s relational spacetime—the quantum domain extends relationality to physical properties and facts themselves. In this paper, I develop an info-computational perspective on relational quantum mechanics (RQM), conceiving observers as informational agents embedded within physical processes. Quantum states are understood as constraints on possible interactions rather than intrinsic attributes of isolated systems. I review key relational, perspectival, and information-theoretic approaches—including QBism, perspectival quantum realism, reference-frame–dependent observables, categorical quantum mechanics, and graph-based formalisms—and argue that they converge on a view of physics grounded in relations and information flow. Relational objectivity emerges through inter-agent translation rules rather than observer independence, providing a unified framework for understanding quantum measurement, inter-observer agreement, and physical ontology.
Abstract The double-slit experiment is a classic experiment that presents the clearest manifestation of wave-particle duality, one of the fundamental principles of quantum mechanics. The double-slit experiment still remains the phenomenon that demonstrates wave-particle duality at the most fundamental level. This phenomenon quantitatively and conceptually demonstrates that microscopic objects can behave like both waves and particles at the same time. This article provides an in-depth analysis of the physical nature of dualism, the mechanism of formation of the interference pattern, and the impact of the act of observation on the dynamics of quantum systems. The need for a new perspective on this topic is due to the fact that the current uncertainty in the interpretation of quantum reality has not yet been completely eliminated, and the boundaries between classical and quantum behavior in microscopic objects are still being explored. The results presented here restructure the deep mechanisms of the interference picture, more clearly frame the relationship between observation and wavefunction collapse, and provide a quantum. Since the article attempts to provide a complete answer to the mechanism of the formation of wave-particle duality, extensive space is given to sections such as historical development, theoretical models, modern research, etc. New approaches to this phenomenon have been developed using modern research and string theory. As a result, a new mathematical expression has been proposed that explains the reasons for the initial emergence of wave-particle duality, and is also important for string theory. The article explains the measurement problem with a more effective physical structure and ontological model.
Field-Theoretic Explanation of Wave-Particle Duality—Unification of Particle Locality and the Wave Nature of the Perturbation Field This paper provides a physical explanation of the most central puzzle in quantum mechanics—wave-particle duality—without relying on "probability-amplitude collapse" or "nonlocal entanglement." This theory divides all matter in the universe into Nie-matter entities (massive, Staticity) and Ji-matter entities (massless, Dynamicity), and maintains that quantum objects (electrons, neutrons, etc.) are always localized Nie-matter entity particles. Their "wave behavior" originates from the particle's local perturbation of the Ji-matter field that already fills space during motion—the perturbation propagates in the form of a wave, produces an interference field when passing through the double slits, and the interference field in turn guides the particle's landing position. The particle always passes through only one slit, while the field passes through both slits simultaneously; interference is the behavior of the field, not the behavior of the particle. This mechanism naturally explains double-slit interference, the coexistence of neutron collisions and wave behavior, the disturbance of interference fringes by observation devices, and the variation of interference contrast with source offset and slit spacing. This paper further gives three falsifiable predictions: P6-1 (a decisive distinction between device field-strength disturbance and which-path information disturbance), P6-2A (the disturbance effect varies continuously with field strength), and P6-2B (an argument for the explanatory power of double-slit interference contrast—naturally derived from one mechanism vs. jointly explained by four independent concepts). Compared with mainstream theory, this theory does not need "wavefunction collapse," does not need "nonlocality," and does not need "many worlds"—it only needs to acknowledge: particles are localized, the field fills space, and the motion of particles is guided by the local field gradient.