Jun 22 – 26, 2026
Stony Brook University/Online
America/New_York timezone

Machine-Learning-Assisted Fock-Space Truncation for Light-Front Hamiltonian Calculations

Jun 26, 2026, 9:55 AM
20m
CFNS, Peter Paul Seminar Room, C 120 Physics Building (Stony Brook University/Online)

CFNS, Peter Paul Seminar Room, C 120 Physics Building

Stony Brook University/Online

Quantum Computing, AI, and Computational Methods Quantum Computing, AI, and Computational Methods

Speaker

Jie Pan (Stony Brook University)

Description

We present a hybrid computational framework for light-front Hamiltonian calculations in which machine learning is used to assist Fock-space truncation, while the low-lying spectrum is obtained from standard Hamiltonian diagonalization. The goal is to reduce the computational cost of non-perturbative light-front calculations without compromising the physical reliability of established numerical methods. As a proof of concept, we consider simplified light-front bound-state models and train a neural-network-based importance estimator to identify basis states that contribute most significantly to low-lying eigenstates. The selected reduced basis is then passed to a conventional diagonalization procedure, enabling direct comparison with results from larger reference truncations. This approach provides a controlled setting for studying the convergence of light-front spectra under machine-learning-guided basis selection. We discuss quantitative criteria for truncation error, computational efficiency, and the robustness of low-lying wave functions. The framework is intended as a first step toward more efficient light-front calculations relevant to hadron structure and parton physics in the EIC era.

Author

Jie Pan (Stony Brook University)

Presentation materials