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On the Physical Limits of Quantum Superposition: Representation, Interaction, and the Event Horizon

Ayoub Taoussi

Published Feb 1, 2026• 0 citations
Publisher

Abstract

This work presents a short conceptual analysis of quantum superposition with a focus on its physical realization rather than its mathematical formulation. While superposition is a fundamental principle in the formal structure of quantum mechanics, its physical manifestation depends on specific conditions related to interaction, coherence, and energy conservation. The paper emphasizes the distinction between mathematical possibility and physical representability. It argues that quantum superposition requires strict constraints to be physically maintained, and that in realistic environments—where interaction with internal degrees of freedom or external surroundings is unavoidable—coherent superposition cannot persist. The analysis also discusses extreme physical regimes, with particular attention to black hole event horizons. Instead of treating the event horizon as a region that naturally supports coherent quantum states, the paper examines it as a boundary where the physical representation of such states becomes problematic due to strong gravitational effects, redshift, and information scrambling. This discussion is intended as a conceptual clarification rather than a definitive statement about quantum gravity. The manuscript does not challenge the validity of quantum mechanics. Rather, it aims to clarify the physical conditions under which its core concepts can be meaningfully represented. The work is intended as a conceptual and critical note contributing to discussions in the foundations of quantum mechanics and the interpretation of quantum phenomena in extreme environments. KeywordsQuantum superposition; Physical representation; Decoherence; Event horizon; Foundations of quantum mechanics

DOI
10.5281/zenodo.18451371

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arXiv:1502.05311•Feb 18, 2015•1 citation
This work presents a short conceptual analysis of quantum superposition with a focus on its physical realization rather than its mathematical formulation. While superposition is a fundamental principle in the formal structure of quantum mechanics, its physical manifestation depends on specific conditions related to interaction, coherence, and energy conservation. The paper emphasizes the distinction between mathematical possibility and physical representability. It argues that quantum superposition requires strict constraints to be physically maintained, and that in realistic environments—where interaction with internal degrees of freedom or external surroundings is unavoidable—coherent superposition cannot persist. The analysis also discusses extreme physical regimes, with particular attention to black hole event horizons. Instead of treating the event horizon as a region that naturally supports coherent quantum states, the paper examines it as a boundary where the physical representation of such states becomes problematic due to strong gravitational effects, redshift, and information scrambling. This discussion is intended as a conceptual clarification rather than a definitive statement about quantum gravity. The manuscript does not challenge the validity of quantum mechanics. Rather, it aims to clarify the physical conditions under which its core concepts can be meaningfully represented. The work is intended as a conceptual and critical note contributing to discussions in the foundations of quantum mechanics and the interpretation of quantum phenomena in extreme environments. KeywordsQuantum superposition; Physical representation; Decoherence; Event horizon; Foundations of quantum mechanics
This paper proposes that black holes can be described as globally coherent quantum systems, despite the emission of Hawking radiation. While the Hawking process induces a weak coupling between the interior and exterior regions, this interaction is demonstrated to be too small to produce significant decoherence for macroscopic and supermassive black holes. By treating the event horizon as a quasi-isolated, semi-transparent quantum interface, this framework reconciles semiclassical gravity with quantum unitarity. The black hole and its emitted radiation are modeled as a single, entangled pure quantum state that evolves unitarily. Key contributions of this work include: Formalization of the black hole-radiation system as a coherent quantum cavity. Mathematical derivation showing that the decoherence rate scales as Γ_dec ∝ M⁻⁸. Demonstration that for astrophysical black holes, the decoherence time τ_D is astronomically larger than the evaporation time t_evap, implying that global quantum coherence is effectively preserved. A potential resolution to the black hole information paradox within a unitary evolution framework. This research contributes to the ongoing theoretical discussion on the nature of event horizons, quantum information, and the holographic principle. Acknowledgements: I would like to express my deepest gratitude to my beloved dog, Milo, and my father, for their constant support, encouragement, and companionship throughout the development of this research.
This work provides a conceptual clarification of central concepts in quantum mechanics within the framework of the Time–Energy–Universe (TEU). The focus lies on superposition, entanglement, and wave function collapse, and their relation to the concept of instantiation. The aim is not to introduce additional physical mechanisms or to modify existing theories, but to consider established phenomena from a unified conceptual perspective. Quantum states are understood as structures of possible instantiations, while their determination is not interpreted as a physical process, but as a logical form of determinability within an underlying order. The analysis builds upon the conceptual framework developed within the TEU and represents its application to a specific domain of physics. It thereby offers a perspective that allows known physical phenomena to be reconsidered in terms of the relation between possibility and definiteness, and to be further examined within this framework.
This work continues and consolidates a series of conceptual papers developed over an extended period, aimed at clarifying the physical domain of validity of quantum theory. Rather than presenting a new interpretation or extending the formalism, the present contribution serves as a unifying and delimiting statement. It explicitly formulates what quantum theory does not permit to be physically asserted when its formal descriptions are applied beyond conditions of realization. The motivation for publishing this work at this stage is to provide a coherent and self-contained articulation of the process–event constraint that has been developed across earlier discussions, drafts, and case analyses. Several examples—most notably from chemical bonding and spectroscopy—are included here in a compact and finalized form, not as an expansion of scope, but as confirmation that the framework applies consistently beyond abstract foundational scenarios. This manuscript is intended as a stable reference point that closes a conceptual loop, rather than as an open-ended extension of the series.
Recent experimental advances in matter-wave interferometry have demonstrated quantum interference in increasingly large and massive composite objects, including nanoparticles composed of thousands of atoms. These results are often interpreted as evidence that quantum superposition can, in principle, scale arbitrarily with mass and size, with practical limitations arising primarily from environmental decoherence. This technical note argues that mass and size alone are insufficient criteria for assessing the applicability of global quantum superposition descriptions. It introduces a minimal, non-biological architectural distinction between systems that admit an effective global quantum description and systems whose internal organization renders such descriptions operationally ambiguous or illegitimate, even in the absence of significant external decoherence. The analysis does not propose any fundamental limitation on quantum mechanics, nor does it claim that global quantum states cease to exist. Instead, it focuses on the conditions under which global quantum descriptions remain meaningful and useful as effective representations. In architecturally composite systems, internal degrees of freedom may function as endogenous sources of decoherence, limiting the descriptive legitimacy of a single global quantum state. The contribution is diagnostic in nature and aims to clarify common ambiguities in discussions of the quantum–classical transition, the interpretation of large-scale interference experiments, and claims concerning the scalability of quantum superposition. No new physical principles or theoretical modifications are introduced.
In this paper we analyze the definition of quantum superpositions within orthodox Quantum Mechanics (QM) and their relation to physical reality. We will begin by discussing how the metaphysical presuppositions imposed by Bohr on the interpretation of QM have become not only interpretational dogmas which constrain the limits of the present Orthodox Line of Research (OLR), but also how these desiderata implicitly preclude the possibility of developing a physical representation of quantum superpositions. We will then continue analyzing how most interpretations of QM argue against the existence of superpositions. Firstly, we will focus on those interpretations which attempt to recover a classical representation about ''what there is'', and secondly, we will concentrate on the arguments provided by Dieks and Griffiths who, staying close to the orthodox formalism, also attempt to ''get rid of the ghost of Schrodinger's cat''. Contrary to the OLR, we will argue -based on our definition of Meaningful Physical Statements (MPS)- that from a representational realist perspective which stays close to the orthodox Hilbert space formalism, quantum superpositions are not only the key to the most important -present and future- technological and experimental developments in quantum information processing but also, they must be considered as the kernel of any interpretation of QM that attempts to provide a physical representation of reality. We will also argue that the price to pay for such representational realist development must be the abandonment of the (dogmatic) idea that 'Actuality = Reality'.
In this paper we analyze the definition of quantum superpositions within orthodox Quantum Mechanics (QM) and their relation to physical reality. We will begin by discussing how the metaphysical presuppositions imposed by Bohr on the interpretation of QM have become not only interpretational dogmas which constrain the limits of the present Orthodox Line of Research (OLR), but also how these desiderata implicitly preclude the possibility of developing a physical representation of quantum superpositions. We will then continue analyzing how most interpretations of QM argue against the existence of superpositions. Firstly, we will focus on those interpretations which attempt to recover a classical representation about "what there is", and secondly, we will concentrate on the arguments provided by Dieks and Griffiths who, staying close to the orthodox formalism, also attempt to "get rid of the ghost of Schrodinger's cat". Contrary to the OLR, we will argue -based on our definition of Meaningful Physical Statements (MPS)- that from a representational realist perspective which stays close to the orthodox Hilbert space formalism, quantum superpositions are not only the key to the most important -present and future- technological and experimental developments in quantum information processing but also, they must be considered as the kernel of any interpretation of QM that attempts to provide a physical representation of reality. We will also argue that the price to pay for such representational realist development must be the abandonment of the (dogmatic) idea that 'Actuality = Reality'.