Comment on Classical-Gravity--Quantum-Matter Claims About Gravity-Mediated Entanglement

Mikołaj Sienicki; Krzysztof Sienicki

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arXiv · 2511.20717

Comment on Classical-Gravity--Quantum-Matter Claims About Gravity-Mediated Entanglement

Mikołaj Sienicki·Krzysztof Sienicki

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Abstract

A recent paper by Aziz and Howl (Nature 2025) 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. A contemporaneous critical note (Marletto, Oppenheim, Vedral, Wilson, arXiv:2511.07348v1) 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. In this comment we (i) restate the core point of that critique, (ii) give a channel theoretic reformulation that makes the conclusion model independent, and (iii) clarify the distinction between activation of entanglement in already quantum matter and genuine mediation of entanglement by a classical field. Once these clarifications are in place, the standard BMV inference that observation of gravity mediated entanglement strongly indicates nonclassical gravitational degrees of freedom remains intact.

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Mikołaj Sienicki, Krzysztof Sienicki. 2025-11-25. Comment on Classical-Gravity--Quantum-Matter Claims About Gravity-Mediated Entanglement. https://arxiv.org/abs/2511.20717

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