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Entanglement at the Saturation Boundary: Resolving the AMPS Paradox Without Firewalls, Nonlocal Signaling, or Violations of Monogamy

Mark Edwards

Published Apr 15, 2026• 0 citations
Publisher

Abstract

This paper resolves the AMPS paradox by identifying a single structural assumption inherited from semiclassical quantum field theory: the infalling mode is treated as a valid degree of freedom at the horizon. In the informational framework, this assumption fails because the horizon is a saturation boundary where the channel C(x) reaches its critical capacity C₍crit₎. When an eigenmode crosses this boundary, it exits the unsaturated spectrum and ceases to exist as a distinct informational degree of freedom. Its distant partner decoheres structurally—not dynamically—because the geometric anchor maintaining the entanglement correlation is erased. This mechanism resolves the paradox without firewalls, nonlocal signaling, or violations of monogamy, and provides a unified informational account of black hole entropy, decoherence, and horizon behavior.Mathematical Notation Statement.All mathematical expressions in this manuscript use a dual‑inline format in which each expression appears first in bold Unicode, followed by its archival LaTeX form in square brackets. This ensures stability across Word, PDF, and archival repositories. No external references or prior results were required for the development of the mechanism presented in this work.Conical Source Statement.This work is part of a unified research program developed across multiple volumes. Each volume is designed to stand on its own while also forming a coherent component of a larger theoretical structure. Readers encountering this volume independently are encouraged to view it as one face of a conical source: a single underlying framework projecting into multiple disciplinary domains. The geometry, gauge structure, and emergent thermodynamics presented here are consistent with and derived from the same substrate‑level principles articulated throughout the series. This manuscript is intentionally concise, self‑contained, and free of references. All results follow directly from the saturation‑boundary mechanism and the informational curvature identity. The author acknowledges Dr. Mark A. Barber for the catalytic question that motivated this work, and acknowledges the use of AI‑assisted drafting tools for formatting stability and structural clarity.

DOI
10.5281/zenodo.19593537

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Black holes offer an exciting area to explore the nature of quantum gravity. The classic work on Hawking radiation indicates that black holes should decay via quantum effects, but our ideas about how this might work at a technical level are incomplete. Recently Almheiri-Marolf-Polchinski-Sully (AMPS) have noted an apparent paradox in reconciling fundamental properties of quantum mechanics with standard beliefs about black holes. One way to resolve the paradox is to postulate the existence of a ``firewall'' inside the black hole horizon which prevents objects from falling smoothly toward the singularity. A fundamental limitation on the behavior of quantum entanglement known as ``monogamy'' plays a key role in the AMPS argument. Our goal is to study and apply many-body entanglement theory to consider the entanglement among different parts of Hawking radiation and black holes. Using the multipartite entanglement measure called negativity, we identify an example which could change the AMPS accounting of quantum entanglement and perhaps eliminate the need for a firewall. Specifically, we constructed a toy model for black hole decay which has different entanglement behavior than that assumed by AMPS. We discuss the additional steps that would be needed to bring lessons from our toy model to our understanding of realistic black holes.

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This paper resolves the AMPS paradox by identifying a single structural assumption inherited from semiclassical quantum field theory: the infalling mode is treated as a valid degree of freedom at the horizon. In the informational framework, this assumption fails because the horizon is a saturation boundary where the channel C(x) reaches its critical capacity C₍crit₎. When an eigenmode crosses this boundary, it exits the unsaturated spectrum and ceases to exist as a distinct informational degree of freedom. Its distant partner decoheres structurally—not dynamically—because the geometric anchor maintaining the entanglement correlation is erased. This mechanism resolves the paradox without firewalls, nonlocal signaling, or violations of monogamy, and provides a unified informational account of black hole entropy, decoherence, and horizon behavior.Mathematical Notation Statement.All mathematical expressions in this manuscript use a dual‑inline format in which each expression appears first in bold Unicode, followed by its archival LaTeX form in square brackets. This ensures stability across Word, PDF, and archival repositories. No external references or prior results were required for the development of the mechanism presented in this work.Conical Source Statement.This work is part of a unified research program developed across multiple volumes. Each volume is designed to stand on its own while also forming a coherent component of a larger theoretical structure. Readers encountering this volume independently are encouraged to view it as one face of a conical source: a single underlying framework projecting into multiple disciplinary domains. The geometry, gauge structure, and emergent thermodynamics presented here are consistent with and derived from the same substrate‑level principles articulated throughout the series. This manuscript is intentionally concise, self‑contained, and free of references. All results follow directly from the saturation‑boundary mechanism and the informational curvature identity. The author acknowledges Dr. Mark A. Barber for the catalytic question that motivated this work, and acknowledges the use of AI‑assisted drafting tools for formatting stability and structural clarity.
For over a decade, the AMPS "Firewall" paradox has forced an irreconcilable fracture in theoretical physics, requiring the abandonment of either the equivalence principle or the unitarity of quantum mechanics. This paradox relies entirely on a false foundational assumption: that the spatial vacuum possesses infinite data-processing capacity, allowing an infalling particle to maintain its continuous kinematic degrees of freedom across the event horizon. This repository contains the formal manuscript and executable computational proof falsifying the AMPS Firewall. By mapping the event horizon strictly as a macroscopic Bekenstein-Landauer saturation boundary (CcritC_{crit}Ccrit​), we demonstrate that the dissolution of quantum entanglement requires no infinite energy barriers, non-local signaling, or procedural physics equations. The ICF Hammer (Declarative Physics): Traditional quantum models rely on procedural equations of motion. The Python engine provided in this repository is purely declarative. We do not write a single line of code instructing the entanglement connection to break, and we do not program a firewall to sever it. We simply enforce the strict thermodynamic capacity limit of the spatial vacuum. When the localized geometric capacity required to anchor an entangled channel drops to zero, the channel mathematically ceases to exist. The distant eigenmode structurally decoheres as a deterministic, emergent thermodynamic necessity. The firewall is a mathematical hallucination; it is herein replaced by topological dissolution. Repository Contents: Entanglement_Saturation_Boundary.pdf: The complete theoretical manuscript, including the embedded storyboard and cross-domain unified index. Entanglement_Storyboard.png: High-resolution, 2-panel diagram detailing the physical geometry of the saturation crossing. Entanglement_Dissolution.gif: High-resolution animated proof of the topological dissolution. icf_entanglement_killshot_engine.py: The executable declarative Python script. README.md: Repository documentation and execution instructions.
WITHDRAWAL / SUPERSESSION NOTICE (2026-05-31). Subsumed and refined by the canonical ANCHOR §11 black-hole paper (`updated_black_hole.tex`), which incorporates the firewall-resolution mechanism into a broader operator-algebra closure with KMS-derived Hawking temperature, monogamy-firewall horizon, condensate-core interior, and bulk-boundary scale separation. Current canonical version: doi.org/10.5281/zenodo.20478667. The AMPS firewall paradox [1] arises from three quantum-mechanical statements that are jointly required by standard physics for old black holes but mutually inconsistent: uni- tarity (information conservation), the equivalence principle in its quantum form (vacuum at the horizon), and monogamy of entanglement. Standard resolutions either weaken one of these or invoke complementarity / ER=EPR redundancy without specifying a concrete mechanism. We propose, building on the quantum-error-correcting substrate framework [6, 7, 8], that horizons are 2D surfaces of high stabilizer-measurement activity on the Trun- cated Cubic Honeycomb (TCH) substrate, structurally distinct from bulk vacuum but non- destructive (QND) at the quantum level. This proposal weakens the strong quantum form of the equivalence principle while preserving its geometric form, in a manner that is specific and physically motivated rather than ad-hoc. We identify three explicit derivations that would constitute a complete resolution: a derivation of horizon dynamics from substrate properties; an explicit isometry between interior and exterior mode-encodings establishing QEC redundancy; and recovery of Hawking’s thermal spectrum from substrate dynamics. The framework’s structural ingredients are laid out as a basis for these derivations. We do not claim the firewall paradox is resolved; we claim the framework provides specific tools that may resolve it, and that the proposed mechanism is structurally motivated rather than chosen to match desired outcomes.
This document is part of the Informational Mechanics (IM) framework and is published in the IM-D (Core Physics) series within the IM v0.3 corpus. The paper addresses the black hole information problem by re-examining the physical meaning of information under extreme gravitational collapse. Rather than treating the problem as a conflict between information loss and information preservation, the analysis argues that both alternatives presuppose the continued admissibility of operator-defined information in regimes where the structural conditions required to define information may no longer hold. Within Informational Mechanics, information is defined only where admissible structure exists: stable distinctions, persistent identities, and reproducible correlations supported by operational comparability under disturbance. Under gravitational collapse and evaporation, these conditions fail. In such regimes, the operators required to define, track, or recover information cease to be physically implementable, rendering questions of loss or preservation physically undefined rather than false. This admissibility-based perspective reframes the black hole information paradox without introducing new dynamics, modifying quantum mechanics, or invoking observer-dependent ontologies. Formal unitarity may remain intact at the level of mathematical description, while the physical content of information-bearing correlations becomes inadmissible. The firewall paradox is treated as a direct corollary, arising from an inadmissible demand for simultaneous operator-defined access to interior, exterior, and horizon-spanning descriptions. The paper synthesizes and clarifies the distinct insights associated with Penrose, Hawking, and Susskind by showing that each applies within a different admissible regime. Black holes are treated as local admissibility boundaries, analogous to cosmological regime boundaries analyzed in Regime Condensation Cosmology (IM-D002). This work introduces no new dynamics, models, or experimental fits. Its contribution is disciplinary and structural: to clarify the regime conditions under which “information” is physically defined, and to reclassify the paradox as an inadmissible demand for simultaneous operator-defined access across incompatible regimes.
The monogamy of quantum entanglement, applied by Almheiri-Marolf-Polchinski-Sully (AMPS) to black holes, obstructs a smooth horizon vacuum after the Page time. We transcribe this argument to Hawking-like phonon radiation from a sonic horizon in the Unruh acoustic metric. An exact purity identity shows that post-Page-time unitarity forces the entanglement between an outgoing phonon and its interior partner to vanish, selecting a non-Hadamard (Boulware-like) phonon state, which we define as an acoustic firewall. Its renormalized stress tensor differs from the smooth state by a constant, negative near-horizon flux, and the thermal-atmosphere energy density it removes, measured by a static calorimeter, grows as (δr)−2(δr)^{-2}(δr)−2 in the radial coordinate toward the horizon (singular in the free-fall frame), cut off at the healing length. The construction is kinematic and does not resolve the information paradox; it yields one concrete, falsifiable prediction: a differential phonon-calorimetry signal R(δr)=∣ΔE∣/E(0)→(ℓκ/δr)2\mathcal{R}(δr)=|Δ\mathcal{E}|/\mathcal{E}^{(0)}\to(\ell_κ/δr)^{2}R(δr)=∣ΔE∣/E(0)→(ℓκ​/δr)2, present only after the analogue Page time in a Bose-Einstein condensate.
On the Resolution of the Black Hole Information Paradox and Firewall Exclusion via the Boundary Formalism and Observer-State Interaction Dynamics Michael Allan A. Bahtaji, Ph.D. Department of Physics, College of Science Technological University of the Philippines Ayala Boulevard, Ermita, Manila, Philippines, 1000 Email: michaelallan_bahtaji@tup.edu.ph | michaelallanbahtaji336@gmail.com Abstract We present a self-contained, unitary quantum gravitational framework resolving the Black Hole Information Paradox and eliminating the AMPS energetic firewall problem. Utilizing the Finite Boundary Formalism, we establish that the event horizon acts as a dynamic state-density boundary governed by the inverse relation . By coupling the density matrix evolution of the black hole-radiation system to the observer-state interaction operator , we derive an exact conservation equation for the fine-grained entanglement entropy . We demonstrate that beyond the Page time , a negative observer-state interaction gradient forces the emission of high-order multi-qubit correlations via localized state fluctuations . This mechanism reproduces the symmetric Page curve, enforcing complete information recovery and -matrix unitarity () while preserving smooth Horizon geometry without singular energetic firewalls.
Black holes offer an exciting area to explore the nature of quantum gravity. The classic work on Hawking radiation indicates that black holes should decay via quantum effects, but our ideas about how this might work at a technical level are incomplete. Recently Almheiri-Marolf-Polchinski-Sully (AMPS) have noted an apparent paradox in reconciling fundamental properties of quantum mechanics with standard beliefs about black holes. One way to resolve the paradox is to postulate the existence of a ``firewall'' inside the black hole horizon which prevents objects from falling smoothly toward the singularity. A fundamental limitation on the behavior of quantum entanglement known as ``monogamy'' plays a key role in the AMPS argument. Our goal is to study and apply many-body entanglement theory to consider the entanglement among different parts of Hawking radiation and black holes. Using the multipartite entanglement measure called negativity, we identify an example which could change the AMPS accounting of quantum entanglement and perhaps eliminate the need for a firewall. Specifically, we constructed a toy model for black hole decay which has different entanglement behavior than that assumed by AMPS. We discuss the additional steps that would be needed to bring lessons from our toy model to our understanding of realistic black holes.