Islands of Instability in Nonlinear Wavefunction Models in the Continuum: A Different Route to "Chaos"

• URL: http://arxiv.org/abs/2512.09109v1
• Date: Tue, 09 Dec 2025 20:50:35 GMT
• Title: Islands of Instability in Nonlinear Wavefunction Models in the Continuum: A Different Route to "Chaos"
• Abstract summary: In two previous papers the author described Islands of Instability" that may appear in wavefunction models with nonlinear evolution.<n>Here I show that the instability criteria can be verified by plugging test-functions into certain computable expressions.<n>The method can accommodate realistic inter-molecular potentials and so may be relevant to instabilities in fluids and gasses.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In two previous papers the author described ``Islands of Instability" that may appear in wavefunction models with nonlinear evolution (of a type proposed originally in the context of the Measurement Problem). Such ``IsoI" represent a new scenario for Hamiltonian systems implying so-called ``chaos". Criteria was derived for, and shown to be fulfilled in, some finite-dimensional (multi-qubit) models, and generalized in the second paper to continuum models. But the only example produced of the latter was a model whose linear Schrodinger equation was exactly-solvable. As exact solutions of many-body problems are rare, here I show that the instability criteria can be verified by plugging test-functions into certain computable expressions, bypassing the solvability blockade. The method can accommodate realistic inter-molecular potentials and so may be relevant to instabilities in fluids and gasses.

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