arXiv AI

Bi-FORK: Generative Modeling of High-Dimensional Bifurcating Systems

Bi-FORK is a generative framework designed to learn one-to-many solution maps in high-dimensional systems undergoing symmetry-breaking bifurcations. It generates complete trajectories via latent flow matching, maintains space and time coherence, and employs repulsion-guided sampling to recover distinct solution branches in a single amortized pass. The method is evaluated on buckling beams, mechanical metamaterials, and Allen‑Cahn phase separation, handling discretizations up to 260,000 points and recovering multimodal solution structures while scaling beyond prior approaches.

arXiv Machine Learning
Sep 22

Learning Physics from an Imperfect Ancestor

arXiv:2609.24947v1 Announce Type: new Abstract: Neural operators evaluate parametric partial differential equations cheaply but degrade sharply outside their training distribution. Physics-informed n...

By S. Mohammad Mousavi, Teeratorn Kadeethum, Nikolaos Bouklas, Somdatta Goswami
arXiv Machine Learning
Nov 2

Learning Nonlocal Interactions in Large-Scale Heterogeneous Metamaterials through Scientific Machine Learning

The paper introduces DANO, a domain‑decomposition attention neural operator that learns configuration‑dependent nonlocal interactions in heterogeneous systems governed by linear field equations using only field data. It demonstrates full‑field predictions for large‑scale optical metasurfaces, including transfer across domain sizes and inverse design, while validating the learned interactions through physics‑based interrogation. The work positions DANO as an AI‑for‑Science tool for discovering interactions and enabling scalable, customizable design of nonlocal multiscale systems such as virtual‑reality optics.

By Dex Doksoo Lee, Jehyeon Shin, Yue Yu, Sunkyu Yu, Junsuk Rho, Wei Chen
arXiv Machine Learning
Oct 15

Constitutive parameterized deep energy method for solid mechanics problems with random material parameters

The paper introduces the Constitutive Parameterized Deep Energy Method (CPDEM), a physics‑driven neural network that embeds stochastic material parameters directly into the strain energy density functional. By training via expected energy minimization over the parameter domain, CPDEM learns a continuous solution manifold, enabling zero‑shot, real‑time inference of displacement fields for any material parameters without retraining or dataset generation. The method is validated on linear elasticity, finite‑strain hyperelasticity, and highly nonlinear contact mechanics, marking the first purely physics‑driven deep learning approach that efficiently handles continuous multi‑parameter variations in solid mechanics.

By Zhangyong Liang, Jihong Zhu, Huanhuan Gao
arXiv Machine Learning
Sep 15

Physics-Constrained Neural Surrogate for Domain Growth Prediction in Systems with Conserved Kinetics

The paper introduces a physics-constrained neural network surrogate that learns the microstructural evolution of binary mixtures governed by the Cahn‑Hilliard equation. By imposing conservation of the order parameter as a hard constraint on the network output, the model accurately predicts long‑time phase‑separation dynamics for both critical and off‑critical mixtures, maintaining mixture composition and matching the Lifshitz‑Slyozov domain‑growth law. A variant that enforces conservation only through a penalty term drifts from the initial composition and loses predictive accuracy over long rollouts, underscoring the necessity of the hard constraint for stability.

By Vijay Yadav, Pallvi Pandey, Madhu Priya, Manish Dev Shrimali, Prabhat K. Jaiswal
arXiv AI
Jul 2

A Multi-Resolution Finite-Volume Inspired Deep Learning Framework for Spatiotemporal Dynamics Prediction

arXiv:2607. 00460v1 Announce Type: cross Abstract: Predicting complex spatiotemporal dynamics in physical processes often demands computationally expensive numerical methods or data-driven neural networks that suffer from high training costs, error accumulation, and limited generalizability to unseen parameters.

By Xin-Yang Liu, Xiantao Fan, Jian-Xun Wang