Abstract
In this article, we construct a global martingale solution to a general nonlinear Schrödinger equation with linear multiplicative noise in the Stratonovich form. Our framework includes many examples of spatial domains like $${{\mathbb {R}}^d}$$ , non-compact Riemannian manifolds, and unbounded domains in $${{\mathbb {R}}^d}$$ with different boundary conditions. The initial value belongs to the energy space $$H^1$$ and we treat subcritical focusing and defocusing power nonlinearities. The proof is based on an approximation technique which makes use of spectral theoretic methods and an abstract Littlewood–Paley-decomposition. In the limit procedure, we employ tightness of the approximated solutions and Jakubowski’s extension of the Skorohod theorem to nonmetric spaces.
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More From: Nonlinear Differential Equations and Applications NoDEA
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