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arXiv · 2608.29534

Remarks on the two-dimensional Cahn-Hilliard equation forced by divergence of space-time white noise

Kazuo Yamazaki
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Abstract

We consider the two-dimensional Cahn-Hilliard equation forced by divergence of space-time white noise that represents Kawasaki dynamics in conservative form. The standard heuristic argument shows that the solution is a distribution and thus the product within the nonlinear term is ill-defined. We prove the global-in-time unique solution theory. Besides a minimum amount of the standard renormalization procedure to deal with ill-defined products, our proof consists of applications of deterministic analysis tools and taking advantage of the unique structure of the equation, which is crucial.

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Kazuo Yamazaki. 2026-08-30. Remarks on the two-dimensional Cahn-Hilliard equation forced by divergence of space-time white noise. https://arxiv.org/abs/2608.29534

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