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arXiv · 2511.00971

Large torus limit of global dynamics of the two-dimensional dispersive Anderson model

Ruoyuan Liu·Nikolay Tzvetkov
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Abstract

We continue the study of the two-dimensional dispersive Anderson model (DAM), i.e. the nonlinear Schrödinger equation with multiplicative spatial white noise. For this model, global well-posedness on the periodic domain was established by Visciglia and the second author (2023), and global well-posedness on the full space was established by Debussche, Visciglia, and the authors (2024). We show that, under suitable initial conditions and suitable periodization procedure of the noise, the periodic global dynamics of the DAM converges in spaces of local domains to that of the DAM on the full space as the period goes to infinity. In order to control the growth of the noise and obtain a priori bounds for solutions independent of the periodicity, we introduce periodic weights and construct weighted function spaces on periodic domains. In Appendix, we also discuss the same problem for the parabolic Anderson model.

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Ruoyuan Liu, Nikolay Tzvetkov. 2026-02-13. Large torus limit of global dynamics of the two-dimensional dispersive Anderson model. https://arxiv.org/abs/2511.00971

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