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Observer as a Physical System: A Causal Integration-based Quantum Measurement Model and Its Crucial Experiment

xinwu chen

Published Mar 5, 2026• 0 citations
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Abstract

Abstract This paper proposes a novel framework that reinterprets the observer in quantum mechanics as a physical system governed by causal integration principles. By modeling the observer as an active participant in the measurement process—rather than a passive external entity—we show that quantum collapse can emerge as a natural consequence of the observer’s internal causal structure and information processing constraints. This framework avoids the ad-hoc postulates of standard quantum theory and provides a consistent, ontologically grounded account of measurement. Crucial experimental tests are proposed to validate the predictions of this model, including modified double-slit experiments and precision measurements of quantum correlations. These experiments aim to distinguish between the predictions of our causal integration model and those of conventional quantum mechanics, thereby opening new avenues for experimental investigation into the foundations of quantum theory.

DOI
10.5281/zenodo.18865376

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Abstract This paper proposes a novel framework that reinterprets the observer in quantum mechanics as a physical system governed by causal integration principles. By modeling the observer as an active participant in the measurement process—rather than a passive external entity—we show that quantum collapse can emerge as a natural consequence of the observer’s internal causal structure and information processing constraints. This framework avoids the ad-hoc postulates of standard quantum theory and provides a consistent, ontologically grounded account of measurement. Crucial experimental tests are proposed to validate the predictions of this model, including modified double-slit experiments and precision measurements of quantum correlations. These experiments aim to distinguish between the predictions of our causal integration model and those of conventional quantum mechanics, thereby opening new avenues for experimental investigation into the foundations of quantum theory.
Modern physics has achieved extraordinary predictive success, yet it continues to face unresolved conceptual tensions concerning the role of the observer, the nature of information, and the origin of physical structure. From quantum measurement to cosmology, the assumption of an observer-neutral reality increasingly appears insufficient to fully account for empirical phenomena and theoretical inconsistencies. This manifesto proposes an Informational Observer-Centered Framework, in which information is treated as a fundamental ontological substrate and observation as an active, structured process rather than a passive act of measurement. Within this perspective, physical systems, observers, and informational exchanges form a unified dynamics, where state reduction, decoherence, and emergent classicality arise from informational interactions and constraints. Rather than introducing a new closed theory, this manifesto establishes a conceptual foundation unifying several complementary models—including Informational State Dynamics, observer-dependent informational compression, and informational interpretations of quantum and cosmological phenomena—into a coherent research program. The framework is explicitly non-dogmatic, open to falsification, and intended as a guiding structure for further theoretical development and empirical testing. The aim of this document is not to replace existing physical theories, but to clarify their conceptual boundaries and propose an integrative lens through which unresolved problems in quantum foundations, cosmology, and cognitive systems may be systematically explored.
Quantum measurement is widely regarded as paradoxical due to the apparent role of observers, wave function collapse, and mutually inconsistent descriptions of reality. We argue that these paradoxes are not intrinsic to quantum mechanics, but arise from a category error: treating observer-dependent inferences as observer-independent physical facts.We introduce a causality-first framework in which quantum states represent open causal structures, and measurement corresponds to a scale-dependent transition to causal closure. No privileged observer, stochastic collapse mechanism, or many-worlds ontology is required. Within this framework, celebrated paradoxes such as Wigner’s Friend and the Frauchiger–Renner no-go theorem dissolve, as their contradictions rely on an implicit violation of causal consistency.Our proposal does not modify quantum dynamics nor introduce new postulates. Instead, it clarifies when quantum processes may enter causal chains. The result is a realist, observer-independent account of measurement that preserves standard quantum theory while eliminating its most persistent conceptual pathologies.
The quantum measurement problem arises from a structural asymmetry in standard formulations of quantum mechanics: while unitary evolution is treated as fundamental, irreversible events are introduced only through ad hoc postulates. As a result, measurement, decoherence, and probability appear conceptually disconnected. In this work, we propose a minimal reformulation in which irreversible interaction events are taken as ontological primitives. An event is defined as a completely positive, trace-preserving map that is not equivalent to any unitary transformation. Unitary evolution emerges as an effective description valid between events. Within this framework, quantum measurement is not a special process but a particular class of irreversible events with outcome-resolving structure. The Born rule arises naturally from the statistical structure of event realizations, and environmental decoherence is reinterpreted as a high density of irreversible events. No collapse postulate, observer-dependent rule, or modification of quantum dynamics is required. This formulation provides a unified and physically grounded resolution of the measurement problem and establishes a conceptual foundation for event-based extensions connecting quantum theory with spacetime and gravity.
Quantum mechanics is among the most successful mathematical frameworks in modern science, providing precise predictions, experimental validation, and wide-ranging technological applications. This success, however, has been accompanied by a long-standing suspension of a fundamental question: the ontological status of quantum itself. While dominant approaches emphasize how quantum phenomena behave, the question of what these behaviors are the behavior of has largely been deferred. This work does not propose a new physical theory, nor does it challenge the empirical or mathematical foundations of quantum mechanics. Instead, it offers an ontological positioning that reintroduces the question of ground. Quantum is approached neither as a discrete object nor as a purely mathematical formalism, but as the joint mode of operation of energy, nature, and consciousness. Within this framework, consciousness is not treated as an external causal agent acting upon physical systems, but as an immanent, organizing, and meaning-generating aspect of energetic continuity. Differentiation is thus located not in nature itself, but at the level of meaning. Observation and measurement are reinterpreted accordingly, not as mechanisms of physical collapse, but as processes through which ontological distinctions become articulated. By reframing quantum as a ground rather than a thing, this study aims to clarify persistent conceptual tensions—such as the observer problem and the status of measurement—without invoking speculative physics or metaphysical dualism. The paper presents not a solution, but a repositioning: an invitation to reconsider the ontological assumptions that guide contemporary readings of quantum mechanics.
Abstract The quantum measurement problem remains a foundational challenge due to the lack of an operable physical definition of the "observer." This paper addresses this gap by modeling the observer as a discrete dynamical system with a quantifiable causal structure, characterized by three hierarchical dimensions: Differentiation Degree, Interaction Degree, and Global Integration Degree. From these, we define the Effective Integrated Information Degree (Φ) as a single metric for the system’s information-processing capability. Based on the unitary evolution of quantum mechanics, we derive a testable core relationship: the uncertainty probability P of a measurement outcome decays exponentially with \Phi , i.e., P \propto e^{-\alpha \Phi} . This provides a mechanistic explanation for wave function collapse rooted in the internal dynamics of the observer system. We further establish a universal Mass-Energy-Information Equivalence framework by integrating Einstein’s mass-energy equivalence with Landauer’s principle, proving a rigid conversion between \Phi and the equivalent mass of the system. This work represents a paradigm shift: it transforms the "observer" from a philosophical concept into a calculable, verifiable physical system, and opens an empirically tractable path toward unifying quantum mechanics with fundamental physics. Regardless of experimental outcomes, the model provides a rigorous foundation for resolving the quantum measurement problem and advancing our understanding of the universe’s fundamental laws.
Quantum mechanics predicts measurement outcomes with remarkable accuracy, yet the physical mechanism responsible for measurement remains unspecified. Standard formulations treat collapse as an external postulate or informational update, leaving the origin of measurement outside the theory’s physical description. This paper proposes a mass-induced mechanism for quantum measurement within the framework of Quantum Substrate Dynamics (QSD), in which the observer is not a privileged entity but a coherence structure formed by stable matter interacting with propagating excitations. In QSD, stable matter forms mass-phase structures possessing finite coherence envelopes that evolve through discrete Causality Intervals (CIs) governing how the substrate can reconfigure. Massless excitations, such as photons, lack coherence envelopes and therefore cannot initiate collapse; they propagate only through geometric constraints imposed by nearby mass-phase structures. Measurement occurs when the coherence envelope of a mass-phase structure intersects a propagating excitation and enforces local CI pacing and curvature--compliance limits on the substrate. Collapse is therefore realized as a structural re-locking of the substrate, in which only configurations compatible with the local mass-phase environment can persist. This mechanism reproduces key empirical features of quantum experiments, including the material dependence of diffraction and detection, the emergence of interference patterns at mass-phase boundaries, and the absence of photon--photon interaction in free space. Within this framework, longstanding interpretational paradoxes---including Wigner's friend, Schr\"odinger's cat, contextuality, and delayed-choice interference---admit consistent physical explanations without invoking observer-dependent realities, global wavefunction collapse, or branching worlds. Quantum measurement therefore emerges as a mass-induced structural process, in which observation reflects the deterministic reconfiguration of the substrate under finite coherence and curvature constraints rather than an epistemic update or interpretational supplement.