In the two-body Schrödinger-Newton model the nonlinear self-field leaves the Schmidt spectrum unchanged while the pair potential generates entanglement, with growth amplified by delocalized or asymmetric initial states.
A.et al.Correlations and signaling in the Schrödinger–Newton model.Classical and Quantum Gravity41, 245014 (2024)
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Entanglement generation in a two-body Schr\"odinger--Newton model
In the two-body Schrödinger-Newton model the nonlinear self-field leaves the Schmidt spectrum unchanged while the pair potential generates entanglement, with growth amplified by delocalized or asymmetric initial states.