Error bounds for Physics Informed Neural Networks in Nonlinear Schr\"odinger equations placed on unbounded domains
Abstract
We consider the subcritical nonlinear Schr\"odinger (NLS) in dimension one posed on the unbounded real line. Several previous works have considered the deep neural network approximation of NLS solutions from the numerical and theoretical point of view in the case of bounded domains. In this paper, we introduce a new PINNs method to treat the case of unbounded domains and show rigorous bounds on the associated approximation error in terms of the energy and Strichartz norms, provided a reasonable integration scheme is available. Applications to traveling waves, breathers and solitons, as well as numerical experiments confirming the validity of the approximation are also presented as well.
Keywords
Cite
@article{arxiv.2409.17938,
title = {Error bounds for Physics Informed Neural Networks in Nonlinear Schr\"odinger equations placed on unbounded domains},
author = {Miguel Á. Alejo and Lucrezia Cossetti and Luca Fanelli and Claudio Muñoz and Nicolás Valenzuela},
journal= {arXiv preprint arXiv:2409.17938},
year = {2025}
}
Comments
31 pages. v.2: corrected typos, implicit constants made more precise, and improved numerical schemes and results