Matter-Mediated Entanglement in Classical Gravity: Suppression by Binding Potentials and Localization

• URL: http://arxiv.org/abs/2512.13675v2
• Date: Thu, 18 Dec 2025 17:41:51 GMT
• Title: Matter-Mediated Entanglement in Classical Gravity: Suppression by Binding Potentials and Localization
• Authors: Ziqian Tang, Chen Yang, Zizhao Han, Zikuan Kan, Yulong Liu, Hanyu Xue,
• Abstract summary: Two spatially separated masses can become entangled even when gravity is treated as a classical field.<n>We point out that the relevant mechanism is not intrinsically field-theoretic, but is essentially a quantum tunneling/evanescent matter channel.
• Score: 4.4857806924732815
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Aziz and Howl [Nature 646 (2025)] argue that two spatially separated masses can become entangled even when gravity is treated as a classical field, by invoking higher-order "virtual-matter" processes in a QFT description of matter, which is non-LOCC (local operations and classical communication). We point out that the relevant mechanism is not intrinsically field-theoretic, but is essentially a quantum tunneling/evanescent matter channel, which is already captured within ordinary quantum mechanics. More importantly, the microscopic constituents of realistic macroscopic objects are bound and localized by strong potentials, introducing a large internal energy scale that suppresses coherent propagation between distant bodies. Including such binding/localization generically yields an exponential suppression, rendering the matter-mediated contribution negligible at the macroscopic separations relevant to gravitational-entanglement proposals. Consequently, the entanglement identified by AH diagnoses the presence of a coherent matter-exchange channel rather than the classical or quantum nature of gravity, and it does not undermine LOCC-based witness arguments in realistic bound-matter platforms.

Related papers

• Gravitationally-induced Conversion of Local Coherence to Entanglement [0.0]
  We analyze the mechanism of gravitationally-induced entanglement from the perspective of quantum resource theory.<n>We show that the gravitational interaction acts as a unitary channel, redistributing quantum resources between two spatially superposed masses.
  arXiv  Detail & Related papers  (2026-02-10T15:37:51Z)
• Comment on Classical-Gravity--Quantum-Matter Claims About Gravity-Mediated Entanglement [0.0]
  A recent paper by Aziz and Howl argues that, once quantum matter is described at the level of quantum field theory and coupled to a classical gravitational field, higher order processes can generate entanglement between two spatially separated masses.<n>A contemporaneous critical note shows that, in the actual nonrelativistic limit employed there, the interaction becomes ultra local, the total unitary factorizes, and no entanglement is generated from a product input.
  arXiv  Detail & Related papers  (2025-11-25T05:14:33Z)
• Bose-Marletto-Vedral experiment without observable spacetime superpositions [0.1874930567916036]
  We show that entanglement can be generated by gravity without requiring spacetime superpositions or quantum spacetime degrees of freedom.<n>Specifically, we showcase how entanglement can be generated using three distinct toy models.
  arXiv  Detail & Related papers  (2025-06-26T09:48:55Z)
• Emergence of cosmic structure from Planckian discreteness [47.03992469282679]
  In the standard paradigm the inhomogeneities observed in the CMB arise from quantum fluctuations of an initially homogeneous and isotropic vacuum state.<n>We propose an alternative paradigm in which such inhomogeneities are present from the very beginning.<n>Specifically, inhomogeneities in the quantum state at the Planck scale propagate into semiclassical inhomogeneities on CMB scales.
  arXiv  Detail & Related papers  (2025-06-18T12:33:31Z)
• An Operational Quantum Field Theoretic Model for Gravitationally Induced Entanglement [0.0]
  We develop a quantum field-theoretic model of gravitationally induced entanglement between two massive objects in spatial superposition.<n>Using linearized quantum gravity in the static limit, we derive an effective Hamiltonian that induces entanglement between the field modes occupied by the masses.<n>We find that gravitationally induced entanglement leads to a decrease in visibility, consistent with previous nonrelativistic results.
  arXiv  Detail & Related papers  (2025-03-26T18:00:00Z)
• Exploring nontrivial topology at quantum criticality in a superconducting processor [23.278631632470628]
  We present an experimental exploration of the critical cluster Ising model by preparing its low-lying critical states on a superconducting processor with up to $100$ qubits.<n>We develop an efficient method to probe the boundary $g$-function based on prepared low-energy states, which allows us to uniquely identify the nontrivial topology of the critical systems under study.<n>Our results demonstrate the low-lying critical states as useful quantum resources for investigating the interplay between topology and quantum criticality.
  arXiv  Detail & Related papers  (2025-01-08T18:39:44Z)
• Relativistic Quantum Fields Are Universal Entanglement Embezzlers [41.94295877935867]
  Embezzlement of entanglement refers to the counterintuitive possibility of extracting entangled quantum states from a reference state of an auxiliary system.<n>We uncover a deep connection between the operational task of embezzling entanglement and the mathematical classification of von Neumann algebras.
  arXiv  Detail & Related papers  (2024-01-14T13:58:32Z)
• Interaction-induced topological pumping in a solid-state quantum system [18.7657779101508]
  Inter-particle interaction can profoundly alter the band structure of quantum many-body systems. Here we demonstrate interaction-induced topological pumping in a solid-state quantum system comprising an array of 36 superconducting qubits.
  arXiv  Detail & Related papers  (2023-03-08T13:57:13Z)
• Is gravitational entanglement evidence for the quantization of spacetime? [0.0]
  Experiments witnessing the entanglement between two particles interacting only via the gravitational field have been proposed as a test whether gravity must be quantized. We present a parametrized model for the gravitational interaction of quantum matter on a classical spacetime, inspired by the de Broglie-Bohm formulation of quantum mechanics.
  arXiv  Detail & Related papers  (2022-05-02T14:37:24Z)
• Quantum Causal Inference in the Presence of Hidden Common Causes: an Entropic Approach [34.77250498401055]
  We put forth a new theoretical framework for merging quantum information science and causal inference by exploiting entropic principles. We apply our proposed framework to an experimentally relevant scenario of identifying message senders on quantum noisy links. This approach can lay the foundations of identifying originators of malicious activity on future multi-node quantum networks.
  arXiv  Detail & Related papers  (2021-04-24T22:45:50Z)
• Probing chiral edge dynamics and bulk topology of a synthetic Hall system [52.77024349608834]
  Quantum Hall systems are characterized by the quantization of the Hall conductance -- a bulk property rooted in the topological structure of the underlying quantum states. Here, we realize a quantum Hall system using ultracold dysprosium atoms, in a two-dimensional geometry formed by one spatial dimension. We demonstrate that the large number of magnetic sublevels leads to distinct bulk and edge behaviors.
  arXiv  Detail & Related papers  (2020-01-06T16:59:08Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.