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# A demonstration that classical gravity does not produce entanglement

## Details

**Authors** Schneider et al.

**Year** 2026

**Publisher** Classical and Quantum Gravity

**Discipline** Physics

[Read it at the publisher](https://doi.org/10.1088/1361-6382/ae6f62) 
10.1088/1361-6382/ae6f62

## In authors' words

### What they found (results)

A Newton–Cartan analysis shows that if gravity is purely classical, it cannot mediate or cause entanglement between two spatially separated massive particles, so any entanglement observed in a gravitationally-induced-entanglement experiment must be produced by some non-gravitational force.

## Commentary

### In short

The finding turns on distinguishing classical from quantum gravity as the causal mediator of a relationship between two particles, ruling out one candidate relationship-carrier so that an observed correlation can be correctly attributed to something else.

**Patterns it shows** D, R

**Added** 2026-09-08

**How to cite this** Schneider et al. (2026). A demonstration that classical gravity does not produce entanglement. Classical and Quantum Gravity.